The OEM composite gasket is a very very good piece, if fel-pro uses composite as well I would not hesitate to use it. You'll also need intake manifold to head, exhaust manifold to head, and valvecover gaskets, dizzy o-ring too if you can. Full gasket set is a good idea, cheaper as a set...but you'll end up with a handful of parts you won't need. Avoid the cheap eBay gasket sets, their head gaskets are pretty crappy. (had one fail on me)
I've got a full set of tools needed for the job I always carry in my trunk, don't think I will have the GTXR2 out on the road for now, needs a fair bit of work at the moment