The original rear muffler for a 72 is a cylinder type unit with chrome tip. They don't seem to be available anymore from Motorsport.

Anybody knows about another source for the exact same part?

Are they out of stock? The new MSA catalog shows them on page 106 (70-73) rear 15-7002 front 15-7001.

Jim

I purchased a whole set from exhaust manifold back from http://www.courtesyparts.com about a year ago. The attached photo shows my old trashed muffler compared to the OEM replacement. Note the slight difference in the length and style of the chrome tip.

Can you get a 2-1/4" exhaust system in stock form? I've read that 2-1/4" is the optimal exhaust diameter for a stock Z.