seems like most "good" heads/cam/intake combos on a 302 result in about 300 rwhp.
to get to 325, it will have to be better than "good", it will have to be "very good", and pretty darn agressive.
you can't go wrong with AFRs or Twisted Wedge heads. and many of the "better" combos i have seen seem to have Holley intakes, but trick flow and edelbrock also are found in very good combos. for an off the shelf cam, Comp XE cams seem to be a common choice, but there are lots of cams out there, many of which are good. I haven't seen many combos with a TFS stage 3 cam, but that is a very agressive cam as well.
if i were doing it, i'd be leaning toward AFR 165s; either a custom ground or Comp XE274 cam; a Holley SysteMax II intake; long tubes; and a custom tune. that is a very agressive combo that is likely to be above 300 rwhp.
if you want to be certain about getting a combo that meets your needs, i'd recommend contacting jay allen at camshaftinnovations, or ed curtis at fti.
just MHO
