Will an aftermarket intake manifold such as a Skunk 2 provide pretty decent improvements in gains? I have a stock b engine but im adding a short ram, header, and complete cat exaust so i was wondering if adding the manifold to all this will help significantly? Thanks for the help guys

 

with i/h/e you wont see too drastic of a gain. you'll see more gains when you get the engine breathing better with cams, etc.