The installed height (from the forward-facing machined surfaces of the heads/block) of the accessory drive system is different on 94-95s from the foxbody stuff. You can install the March stuff, but you'll need a new timing cover, new water pump, and of course your A/C pump won't fit anymore. Plus, you'll have less space between the front of the accessories and your fan/radiator if you convert.
Basically, it's not worth it. You can make the 94-95 accessory brackets look nice with a little effort.
Paul.