ls - get a golden eagle vtec conversion kit, comes with everything you need

if you are looking into a mild build, i would do what mike suggested, get some b16 pistons, or some CTR's.

as far as head goes, b16 or a GSR head, but if your going to re do the valve train and port n polish, then IMO dosnt really matter.

rocket motorsports has a really good deal going (or did a while back) for thier valve train package. im sure mike can get you some good quotes from them

and of course a good header FTW....plus the RMF gets all teh bitchez and hoez