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Looking at the Ridetech and UMI front end kits (a-arms & coilovers). Anyone that has installed either of these - did you notice any difference in the track width? My car is currently lowered w/ cut springs and the tires already rub on big bumps so I can't afford to push the wheels out any...

I am considering putting Ridetech coilovers on the rear of my GN to get it a little lower. Are the adjustables worth the extra $$? I am curious how the different damping ratios compare to the non-adjustables. My car will not see track duty, it's only for the street so I don't necessarily need...

My car has original paint and overall it's in pretty good shape, however I am determined to finally do something to get rid of the spider webbing, scratches, etc. I've researched a lot of posts on this forum and it seems like a lot of people are using orbitals with various polishes (3M swirl...

Limit Engineering offers one. Just wondering if anyone has any experience with it. Not sure how much benefit you would pick up in reduced lag since the ta49 already spools pretty quick, but the ball bearing should be able to pick up some power due to the increased turbine stage efficiency.

I'm looking to buy locally to save on shipping. Murrays carries it now but not in the weight I need (10W40). Thanks, Sean

Anybody know where I can find compressor maps for the stock TB0348 turbo and the TA49? Searching on this site I only found references to a few T-3 turbos which are not the right ones. Thanks, Sean

(4) Bridgestone Potenza RE730 tires 245/45ZR17 size. Tires are practically brand new. Tread depth is 7mm on all four. I have upgraded my Cobra to 18" wheels so I do not need these 17"s. I would prefer to sell as a set unless I can get two parties interested in splitting them. $500 for the set...

My radiator support is starting to rust and my intercooler has some chips in the paint. I'd like to repaint these. Does anyone know where I can get the correct paint for these areas? Thanks, Sean

Did they require any modification to your GN? Where did you get them? I had to cut my Eibachs to get the stance I wanted and I'm still not real happy with the results. I figured that a coil-over set up is the best option for the rear. Thanks,

(4) Bridgestone Potenza RE730 tires 245/45ZR17 size. Tires are practically brand new. Tread depth is 7mm on all four. I have upgraded my Cobra to 18" wheels so I do not need these 17"s. I would prefer to sell as a set unless I can get two parties interested in splitting them. $500 for the set OBO.

I just installed some 009 injectors and was stupid enough not to lubricate the new o-rings on the injectors prior to installation. The injectors appear to be fully seated in the intake but are off a little on the rail because the clip that goes around the injector and the rail is off by about...

Anyone have a good reference to buy the Track / Touring kit from? I called Cottons to get a quote and the lady was supposed to e-mail me back but she never did. Where did you guys buy your kits? Thanks,

I'm running low-to-mid 13 seconds in the quarter @ 102. This along with my dyno runs indicate I have about 300 hp at the flywheel. All calculations say I'm at 100% duty cycle with my stock injectors so it's time to upgrade. I probably only need 36 pounders right now, but I'm thinking that an...

I'm thinking about a turbo / injector upgrade for my 87 GN but not sure if it's worth it. The car has 14k miles on it and sees the track once per year if at all. I've got the usual bolt on upgrades right now (see my signature) and keeping the stock appearing theme, I was thinking about adding...

I'm working on integrating a contour to the rear thrust face of the 3.8L turbo Buick crankshaft thrust bearing to withstand additional loading due to ballooning of high stall torque converters. Can someone please confirm which side is the rear (that will react the thrust load from the...

Anyone ever experience this before: missing, bucking, and backfiring on a cold start condition. Runs like crap until it's warmed up about 5 or 10 minutes, then idle increases slightly, smooths out, and runs like a champ. All stock. Most of the ignition system has been replaced. Is this a...

Is there any advantage using a THDP instead of a stock replacement 3" downpipe from Postons or Jays GN with ported stock elbow given my current modifications (see sig below)? My only problem with the THDP is cutting the heat shield and if there's no advantage, why pay more money. I do not...

I currently have Eibachs (1" drop) and Bilsteins on all four corners, but I'm planning on adding 4 wheel disks, so I want to lower the car another inch to get the right look. I have two options: 1. Use B-body Bell Tech 2" drop spindles with OE height springs with a higher spring rate. Has...

Hi all, need some advice here. When I go WOT from a stop, I begin lighting up my Caspers knock gauge (the middle yellow light) as the boost climbs in first gear. Ironically, the lights seem to occur as the tires are breaking loose. Has anyone ever had poor traction cause the knock gauge to...