In my area most '94-'95 GT's are in the 8,000 to 10,000 dollar range depending on condition and go up from there on newer ones. The problem with buying a '94 is that it was the first year of that body style so it's more likely you'll have rattles, miscellaneous production problems that would normally be solved as the cars evolved through their production life. '96 and up GT's with 4.6's are usually in the 12,000 and up range. Good luck!
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'84 Mustang 5.0 LX
My car