Update: Exhaust
The layout is 2.5'' x 16 gauge steel piping w/ mandrel bends on each side of the manifold, both sides coming together at the "Y - pipe" turning into 3" piping also w/ mandrel bends then a flange for a muffler and straight pipe to be attached ( still to come)
I got all my piping, O2 bungs, and v- bands from Columbia Madrel Bending.
The stock manifolds didnt clear the firewall so the flanges and a couple inches of the manifold were cut off. The 2.5'' piping is welded onto the stock manifolds and is sent down and back about down pipe length. The rest of the exhaust system is then attached with V-bands and one aluminum hanger.
Everything fits really tight against the chassis. With the car on the ground the exhaust is up 3'' at the lowest point.
By far the most time comsuming part of the swap. Also, really nice to have an extra hand when fabbing an exhaust.
Also, the entire exhaust system, including manifolds and hardware & excluding a muffler, weighed in at 32 LBS