Engine options which one?

[speedfreak]

I want to use abunch of my spare parts for a aggressive street engine to play around with the parts I have are 18* heads w/250cc intake runners and intake manifold 2 inch headers roller components NOS fogger and or plate a 950 HP. I'am not sure what shortblock to use and to use a dish piston or flat top using a 350 block as they are easier to come by and hold up better, should I go 350 383 391 396. The 383 and 391 would be cheaper and easier to get pistons for but the 396 has me interested any thoughts?

[subhuman415]

It would not be worth the extra cost to go 396. Just to get 13ci over a 383 is not worth it. Might as well build a 400 based stroker 415,427,434,454. That would be worth the effort. If you cant come up with a 400 block build a 383.