They make blow-through carbies just for that reason.
Check this out:
Blowthrough Carb How-To
^^^Prepping carbs for blow-through
Forced Induction - Datsun 1200 Wiki
Blow VS draw-through, intercoolers and box(for blow-through) setups.
I'll stick with the MOTEC and EFI due to the greater benifits it holds(logging, strange inputs for whatever sensors you can think of, handy outputs for exhaust strangulation and a throttle kicker/electronic BOV re-route to the exhaust manifold etc etc etc) BUT,
the simpler the system is, truth is the less likely it is to fail.
This is the advantage that the old-school setups have over the more efficient and tunable EFI. Either way you lose something, it depends on what you're willing to sacrifice.
