Ok, what if I did this, if the motor I pick up is in reasonable shape get the following:
RPM Performer Intake
Holley 750 DP carb Electric choke, mechanical secondaries (car is a manual trans)
and this distributor
http://www.summitracing.com/parts/MSD-8362/
then drop the motor in and run it til I am ready to squeeze more power out of it. The 750 carb is more than enough to run on a 350 and 383 running to around 6500 RPMs.
KISS to the bare essentials.