90 4.0 fit in a 96 xj?
so my engine is bad in my 1996 xj its a HO, dunno if that changes much, my FIL has a 4.0 with 122000 from his 1990 mj that he said i can have if it fits. his isnt a HO. just wondering if anyone knew if this older motor will bolt up fine to my jeep. i figure i might have to switch sensors or something up top. does anyone know what all is involved with that, like what i will have to swap or mod in order for things to fit correctly? would really help right now if i can use this free engine. i did search but couldnt find my situation specific info, if someone at least knows where i could go to find this info that would be great alone! thanks all!!