At a crossroads, SB guys please chime in.

Building a stupid street car.
I currently have the car mocked up for a 400 bb with middle of the road heads, medium sized procharger, and lenco four speed. And now thinking about maybe doing a small block instead.
I have weighed every part i have and need to finishes and at road weight with a 15 gallon cell full and me i will be about 2550lbs. drop 100 to go track.
SO
What am i looking at block and head wise to make a small block do the same?
tell me a sb that will do 1k hp and heads