I'm doing a few mods for my bone stock 2000 A4 Z28. I picked up an LS6 manifold, ported tb and a full exhaust. Was planning on getting a lid and possibly the FTRA. My question is, is it worthwhile to get a smooth bellows and a ported MAF end or are they a waste of money?

 

Sorry I think I posted this in the wrong section, meant to post this in external engine.