i saw your build and i was thinking. what are u using for a dist.?
have u considered a Vortec truck type dist. u know the flat crab type that use remote coil, like the lt1? i think that type of dist. would work very well and have good clearnace instead of conventional dist. i think you would be able to use the original factory lt1 coil along with the vortec dist. and perhaps a msd spark box.
but i may be wrong.