I agree that sucks, but if you really wanted to you could have a local garage or exhaust specialist fabricate you a flanges to swap back and forth. Is it worth it? Depends but it is possible and I wouldn't think it cost that much.. I never knew that so thanks for bringing it up.. Good LuckIf I recall correctly v8 mustangs cats are bolted on while the v6 is welded on is there a reason for the difference. Also correct me if I'm wrong but I'm pretty sure the v8 version is bolted on.