Looking for guesstimates...

OK. I am doing a complete engine overhaul this winter. I'm looking for opinions on what set up would produce more power and what kind of hp difference am I looking at?

Anyway...The first set up consists of:
Stock Block
Windage tray
Main Girdle
DSS pro-lite pistons
Custom cam
Roller Rockers
Holley Systemax II
AFR 185 aluminum heads
255lph f/p
75mm maf
70mm tb + spacer
Rotating assembly balanced and blueprinted
Long tube headers + H-pipe dumped

The other set up I was consider is ESSENTIALLY the same except using stock heads and stroking it to a 331.

Later on I will add the heads, but right now I am considering this because of budget purpouses. It is easier to swap a set of heads than it is to swap a crank shaft Obviously, once I put the heads on, the engine will produce more hp with the stroker and a fair bit more torque. What I want to know though is what kind of hp difference will I be looking at in the mean time between the two of them with just stock heads on the stroker?

The engine will be running about 9:1 compression for future supercharger

a 70 HP difference between the two??

So STOCK heads vs afr's would be 70-80 hp??

I didn't think it would be that huge of a difference.