Weiand Stealth Intake Manifold
i had one on a stock 70 318 with a 600 holley and didn't touch a thing besides adding electronic ignition and some headers. it was a nice little driver that would one wheel peel with ease.
with a tall spacer you might run into hood clearance issues-- depending on what it's going in. but other than that, it should be a really nice little set up.