I have drews pedals at home. They have new bearings and the bushing installed already. In laymans terms the red flag area for Drew is welding the torque bar brace on the frame and the tunnel cutting, along with getting the 4spd tunnel metal tacked down in the correct position. A few tape measurments is what he will need there. The rest is bolt in. He will drill 2 holes in the firewall for the bracket where the pedal swing goes, and the location dimples are all ready there from the factory, so that isnt difficult. The pedals go in really easy. His HP 383 crank should be drilled for a bushing since it's an original hp engine. I never had an hp engine without the flange not being drilled. Most of the time the bushing is already their in a hp 4 speed crank. Even if not, I have the bushing laying around in my tool box. I bought a box of them years ago.
Other than the torque bar and tunnel, everything else can be done in about 1 day of backyard mechanic fun. And remembering to be sure to tighten all bolts to specs. Like flywheel, clutch , bell housing. All this stuff goes quick for install, just like changing a clutch in any mopar. So having the correct bolts and special clips for everything is his only stumbling block