My "new" '74 Duster- or why I need a project like a hole in the head
Which got me to "test and tune", everything installed except the carpet. (there's that other body plug!). And yes, those body plugs made the multiple installs and removals MUCH easier. That hydraulic set up gave me fits.
From the bottom. I had to make some modifications to my exhaust routing to clear the crossmember. That's not something everyone might encounter, but because I had mine tucked right up against the floor previously I had to move it around a little to clear the T56 crossmember. Also, my brand new 3.5" driveshaft with 1350 joints.
I installed the clutch master on the firewall, much like 72BBswinger did on his car. I made a bracket that fit into the strengthening rib on the firewall. This was early, I tack welded the bolts into the bracket so it was easier to install.