6152 turbo is good for 680+ or - , That is what precision turbo says. I run dual alcohol and fast, without the fast the car wouldn't run so well. I had it so lean last spring that I lifted front end, broke my motor mount on drivers side, and blew a head gasket. My heads have an old Jim Ruggles trick done to them which is what he calls taper screws. Idea is to pull the head surface tighter into the block to help prevent blow outs. I still held compression and my o-ringed block and the metal rings on the head gasket held it all in place with no damage. I ran maximum boost of 30, because I had a bad manual boost controller and I couldn't dial it down. Now the car is all properly adjusted and tuned and it is awesome how it runs. Few misprints in the article, the tranny is a PTS not a DTS, and rings are total seal. As far as throttle body and turbo, there are other people running better times then me with that combo. It is in the tune, traction, spool up, climate, and alcohol.
