I'll be the 1st to say there is no magic in a lock up converter. You can pretty much buy any of the bigger names....PTC, Vigilante, Edge, Circle-D, Hughes, Coan, 2 different Pro torques etc, and get a quality piece. These are all based on the same parts everyone else uses. I could call Vigilante and tell them what pump, stator and clearances I want and have a converter that performs just like one of my PTC's. The reason PTC has got the rep it's gotten is because of my familiarity with the Buick and it's specific needs. I chose PTC because they have plenty of options from the regular 10" like most buy, then you have the billet lock-up, billet multi-disc lock up and the 9.5 non lock, all for the Buick apps. When I spec a converter I'm trying to balance response(spool up) with efficiency. In some cases you can get a better response with a little sacrifice in efficiency but few people go through the steps to measure it to see where their particular piece stands. There are plenty of converter options out there for anyone to choose what they want. Mike and Dave have sold my converters to their customers and have obviously found something they prefer to sell now which is fine by me.
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