In addition to getting more air in and out of the engine, you may look at a camshaft swap. Ford fuelinjection.com used to have some info on intake mods and cam selection, or you might check with Crane on their offerings. The Speed Density system in your 94 will not allow a mjor cam swap, so you might also look at converting to MAF (mass air flow) which was offered on 95/96 and Calif. models. A tranny shift kit will also help out with better performance on the Bronco if you have the E40D auto, along with an external tranny cooler. That's about the extent of mods I know of, short of swapping to a 460 cid motor, JSM84