Here's the stock M-body cat. It starts out at a full 2 1/4" and even gets almost all the way to the muffler EXCEPT for the last three inches, which neck down to pea shooter size 1 7/8" to fit the stock M-body muffler. Prices range as low as 80 bucks if you look hard. This slip fits perfectly into the Canadian Y-pipe and fits the floor pans.

Owner caption February 2013 · Photo 75 of 85