#230 400 block, add bolt in head bosses for upper head stud retention, aluminum main caps, hat sleeve to 4.185" (best ring packages at that bore), 3.350" 8 CW crank, 1.777" rod journals, GRP 6.400" aluminum rods, Gibtech LW COM balanced vertical gas ported billet pistons, .866" x 2.000" x .180" DLC pins, .6mm, .6mm, 2mm Riken ring set, Jesel cam drive, largest cam barrel that will fit, Jesel lifters, 290/275 @ .050 cam - lift depends on heads, Jesel rocker gear, largest pushrods that will fit, largest box/kickout pan that will fit, std volume oil pump, 2"/2.125"/2.250" headers/merge collector, offset heads down .030".

That's a good start, similar to what set the NHRA PRO STOCK speed record in 1981 at 165 mph, when they were real Hemis and small, but with a few updates that would help hp.