Best Intake for a 408

And the backstory to the 9.0-1 comp and 115 LSA was for a turbo and FI? setup?

This info and current setup will help the suggestions greatly.
Correct, the backstory is based on the turbo setup.

However the current setup consists of the block, crank and rods at this point. Everything else will be changed from the prior so that’s not relevant, because it’s getting pistons, heads, cam & intake right? It will be a completely different engine.