I agree about the weld in exhaust. You can have one custom made by a local shop and installed for less than the catalogs, and there are plenty of shops around. I had mine done last year and would absolutely do it again. Get referrals, though, and try to pick a shop that does customs, because they can fit it perfectly for you.

Under $500, installed and warrantied, fully welded, with dual resonators and a dual crossflow muffler, and repro hangers, from manifolds to tailpipes that exit under the quarters: