KH Discs vs 73+ Discs

I voted '73-up, the way I see it if he spends money on SBP parts he will eventually have to "throw it away" (or sell I guess) when he does decide to go to BBP.

Brake maintenance with sliding calipers is not that bad everyone talks about it like it's a serious reason not to go with them. Makes sense if you are super lazy and cruising a trailer queen once a week but overall if you are racing your car a lot (with turns and stops) you should be regularly checking and maintaining your brakes fairly often anyway.

FWIW look into an 8 1/4" rear, since he wants to race around corners and not at a drag strip with slicks it would probably hold up fine and compared to the 8 3/4" they are everywhere and super cheap.