I thought I read somewhere that they make a seal that sandwiches between the two pipes so seal correctly under pressure unless it was the wiggens clamps you mentioned. Looks like I'll scratch that idea then. I do want them on the exhuast though if they work well.

Intercooler wise I dont feel like spending alot of money for some premade stuff that isnt going to fit anyways.. And I'll have to move stuff around anyways since the tubs take up too much room, I dont even know how I'm going to run the intake yet. I figured I'd just find a decent core and do a mid-mount set up.