Well I'm guessing very light rods and pistons, heads that will flow around 300cfm, maybe to keep it old school tunnel ram with a pair of 660's solid roller with the best money can buy in valve train parts. And leave the line 5k shifting at 8k.
There was a red white and blue 70 swinger that ran at the local track about 25 to 30 years ago that was running low 9's hi 8's with a destroked SB, I think he told me it was a 305ci, left the line at 7k and shifted at 9k peaple backed away from the water box area when he reved that thing up. It was bad a**!!