The puck had been modified at one time for a specific turbo I believe? I put it on my sons car TE52 and it didn't work real well. Depending on what size turbo but I could not tell you what size would be best? I can tell you on his stock turbo it seemed to work ok but not on the 52. $150.00 + shipping if you want it. If you want a pic I could take one tonight and post it in the morning.