The basic specs:

Diamond flat top pistons
K1 4" 4340 crank with 2.10" GM journals
K1 6.125" Chevy H beam rods
Crane Ultra Pro .903" 48 degree .210" offset solid roller lifters
Custom Bullet cam (specs TBD)
Harland Sharp 1.6:1 rocker arm system for W5
Comp 955-16 valve springs
Ferrea 6000 series race valves
More likely 1050 Quick Fuel dominator carburetor

All this is subject to change of course...

As much compression as I can get away with using 110 octane Torco race fuel.

Bracket racing reliability and consistency - and not so much spring pressure that I have to change springs and lifters every season.