Put a clutch in my budys truck a few weeks ago, he got to run he edge on number 5 and the smarty on number 9 finally. After doing some lead foot driving (while keeping eyes on the guages, never got too hot), we made it home and his truck started to run really rough. Thought might be an injector, took it to a dealer. The dealer said we lost cyl number 5. So now we are looking for aftermarket pistons and a rebuild kit. Who makes aftermarket pistons out thier.