I would keep yours and when you have the money to a T-56 swap or a TKO swap, T-5s arent the greatest tranny if you plan on pushing any power. And when you swap up to a TKO or T-56 you have to switch everything anyways.
Is it a straight up trade with another guy for yours? If not why not just take off the mods from yours if you kept some of the stock parts around and save them to put on the '94? Of course you'll probably have to leave the gears or lowering kit on, but like the midpipe and some other of the small stuff?