FBody intake will be the easiest to find these days. Cheap and work well enough. That is if you want a passenger side intake.
I picked mine up for ~$100, and just did a few modifications to it. Didn't bother porting it at all. Tho I may do so whenever
it ever needs to come apart.
People have made 500+ on hogged out M90 cases. While not the best solution, it works.
Kit wise, I bought PLOGS, then a baddly made stattama clone crossover/downpipe that ended up having to be totally
hacked up and redone. So total waste of $ there as could have made it from scratch for much cheaper. Was just
wanting to save some time is all.
I will say, the only thing I don't like about the fbody setup, is the radiator hose that has to run across. I'd like
to replace the radiator with a setup where its on the passenger side, and not have to run a long as hose.