Exhaust recommendations...

[Wagonbacker9]

Anything will fit, its just a question of how much work it takes.

 

[MOBS]

Also, if you're into clamps, I'd personally suggest a pipe spreader. This way you can make your tubing bigger/smaller so they fit together better. You can use a ratchet, but an impact wrench makes it SO much easier/faster.

As far as mufflers, I have magnablows still on my camaro........there's absolutely NO rumble at idle or off-idle, and only a slight bit when you get on it. It's cammed pretty heavily too and like i said, at 450rpm idle, it has no inherent rumble.