hey guys i was wondering what i would need tp make my gt a mach 460 sound system. all i have so far are a few grill peices and one of the amps of a 94 mach 460

 

you would need need the headunit, both the amps, the enclosure in the trunk under the rear deck, and the full wire harness. If not the whole wireharness at least the ends. Its not that easy of a setup to replicate. I would actually be cheaper prolly to go full aftermarket.