I have two G-Force 5-point harnesses laying around the garage. They are out of date, but work fine. One has some mold where it was hanging out the door during a rain storm. G-Force can redo them, but I didn't have time so bought a new set. The cost, no money just get them before the trash man does.
I also have a pair of '90 seats. They have a radical foamectomy and the seat is modified to allow a 5 pt harness to come up between your legs. Good for track days or autocross. Not too bad for daily street use. $50 for the pair.
Finally, I have four Pioneer speakers, 3" I think, that fit into seats as an upgrade to stock seat speakers. $25 (I'll ship these for an additional $5).
In Leonardtown, MD.
Thanks - Jay