Which one for 87' 5.7L 350 TBI?

[BaggedC10]

From what I've read, the Holley 670 CFM TBI should only be used w/ the stock aluminum intake manifold. Should I keep the stock intake manifold and add the Holley TBI unit OR install an Edelbrock Performer intake manifold w/ the stock TBI unit...??? Which combination would give the most HP/Torque increase and best driveability?

I also plan to add an Edelbrock camshaft and lifters, timing chain, and shortie headers.