The guys at PTC are excellent to deal with. So is Lenny at Ultimate. I had terrible luck with both of these companies on a 7" high RPM converter. PTC made an 8" for someone else that ran great in my car, but the one they built for me just would not run with my engine. We just could not find the right match to my combo.

Now on my nitrous stuff PTC was the bomb with the 9.5" they built me. Turbo Action and Dynamic could not get it through their thick skulls my small block nitrous motor made more torque than their big block customer engines did. I always got converters that I could just blow through with my torque flite trannies. Very dissapointing.

Turbo Action was the bomb with my basic small blocks. That 4400 shelf stock 8" converter was the bomb.

A1 is a very good company but probably too expensive for the average racer. ATI may be too. But, they are good converters.

Leon