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complete engine, wiring harness, and computers. you may also need the tranny if they are different because the computer needs to connect to the tranny as well and won't work properly if they're different.

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Q: What does it take to swap a 2.5 motor from a 1992 Jeep Wrangler YJ to a newer 2.5 motor from a 1998 Jeep Wrangler TJ?
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