back on topic: So the driveline & angles are all set up now. NOW I decide the run the exhaust system.
Turns out this is no mean feat. The headers are 2-1/4 primaries (TTI) into 4 inch collectors. I take that down to 3-1/2 and eventually into 3 inch.

As it stands there is NO (zero) room to run 3 inch pipes over the differential... however NFW am I attempting to run this underneath the axle when I am already lowering the car 2 inches.