Used vintage Edelbrock dual quad intake manifold with Holley 600 CFM vacuum secondaries. This manifold and carbs have been sitting for a while and I'd recommend rebuilding the carbs, but they may also be fine as is, that's up to you. I don't see any cracks on intake, the only thing I noticed is the water neck has been taped for 7/16 threads other then that it's as original.