Anybody know the exhaust tubing diameter on the factory JCW system? I'm thinking about pulling the resonator, but I'd rather sleeve / clamp the straight-pipe in as opposed to welding it in case I ever feel like putting it back or exercising warranty on something exhaust related.

 

I'd like to know this too... and is the whole exhaust SS steel as well ?

Z06 nice group of toys... I also have a 71 240Z, 11 JCW, 09 Bonneville...