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91 4.0 in place of 87 2.5

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Considering this swap. Got a 87 4x2 with 2.5 and 4speed. Cylinder went lean and busted the compression ring and put a "divit" in the cyl wall. Donor would be 91 4x2 w 4.0 and AW4. I know I would need the wiring, but how much under dash stuff do I need? Of course radiator and all the specific to 4.0 engine compartment stuff. I would need the 4.0 fuel pump, right? What about the front springs? Should swap rear diff also, I suppose. Pedals should be easy enough. Would I need a newer gauge cluster? Yep, exhaust header pipe, etc.

Probably simpler: 2.5 has 60,000 on a rebuild so take it in, get it sleeved, slap some fresh bearings in it and drive it!

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