had an engine go and found a cheap engine with 65xxx on it only it was a first gen. pulled out and went in except the wiring. The wiring is completely different. If i buy i 86 wiring harness and 86 ECU will it simply plug up and run??? please help 5088013924

 

would i be better off ripping it down to the block and using the 93 intake manifold and splicing the rest???

 

ok so just got everything installed and engine runs when im spraying starter fluid into the intake manifold but then it just dies??? fuel pump is good and fuel filter is good