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Discussion Starter · #1 ·
So i want to go and buy a jeep wrangler 4.0 yj frame and re paint it and all that. i want to get a 4.0 motor and trans to put on it then when its ready swap over my suspension and body. i can get a 4.0 out of a grand Cherokee for $600-900 and a trans for $400-600, the question is will that 4.0 be the same as the wrangler one ? will a jeep wrangler yj 4.0 wiring harness and ecu work? im going to be running a electric fan so i don't need the stock fan.

will a jeep wrangler tj ecu and wiring harness work ? if so i can run a performance chip.

thanks guys !
 
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