Peter is right, 2 1/8" is ~equivalilent of metric 55mm OEM dimension. I've used 2.25" muffler with shim to match up. -- Brian D./OH How can you be in two places at once when you're not anywhere at all... Firesign Theatre q -- Email problems to: scirocco-l-probs@scirocco.org To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org