I see Performabuilt is a vondor here. The difference between myself and them is, I actually interact in posts. I try to answer as many transmission related questions that I can help with. I'm not here just to advertise. The forum fits us for other reasons as well...Like our 11 second '93 Z28, the 9 second '70 Camaro, the 2001 Corvette and the '95 Impala SS.