Help me sort out a 10 second build

You don't need a solid roller to run 10's with a small block. My 408 was 10.8-1, 260/264° @ .050", .628/.633" flat solid with 1.6 rockers, ported Edelbrocks, port matched Victor, 727, 9" converter that flashed 5400, 4.10 gears and a 325 radial, Cal-Tracs and split monos. It ran 6.57 @ 104 in the 1/8 on pump 93 @ 3240#. At the time I had Rancho 9 ways on the rear and CE 3 ways on the front. I'd recommend a decent set of double adjustable shocks if the budget allows.

If it were me, I'd tie the frames, 6 or 8 point roll bar, move the springs inboard and mini tub it. I had to move my rearend back on my 69 Dart 1" to clear the 28" tire, the other option would be to section the wheelwell opening and move the front section forward, 72's may be different though.

Light cars are easier on parts and easier to make fast.