For starters the 4.6 came out of a 2001 gt and the computer, dash, harness and everything is also out of the 01. Everything has went smooth engine and all is in. Now we are trying to finish up the wiring but nothing is matching from the 01 harness to the 98 now from what i read the 96-98 4.6 harness will work but only if you change computers and all again. If not i assume getting a stand alone ecu and harness would be the only other way. Just wondering if anyone else knows anything on this...

Wire harness issue!! 1998 3.8 mustang to 4.6 swap