Sorry to highjack the thread, but I also need info...
I got a 57 bel also and I want to know if anyone has experience with putting an 18", 20" combo on their 57. I need to know what backspacing or offset I need for the 20X10 or 20X9 in the back. I tried to get tires from american racing, but they said they needed to know what offset i needed cause there might be some clearance problems.