StreetFanatic

I am having doubts about putting on after market intake manifolds. I am not to familar with V8's especially vortec since I primarily worked on inline 6's. If I was to get an aftermarket intake manifold what will I have to get so I won't have any problems installing it and will it be a good idea to replace the heads while I do this. If so do you have any pointers to help me get this baby rollin.

Thanks