I purchased this converter 2 years ago from a guy in Texas. He ran a Turbo Buick and said it stalled at 3700 in his car. I just got my car running 3 weeks ago. I have a street car and it was too much stall for my setup. I am running a Procharger on a small block Chevy. I went with a larger converter and 3000 stall. I can give you the factory stamping from the converter and you can talk directly with Art Carr. $300