Should I go Big block or Small block?

i would go small block, but go with the 360. like they say, theres no replacement for displacement. the 340 has a good reputation for power, but the 360 would too if it came out earlier before the government choked everything down with emissions standards. i would put on a good flowing set of heads and a decent cam thats streetable, and of course all the other bolt ons that will give it more power. i would only do whats necessary with machining the block to keep costs down.