I have been going thru the forum looking up information on ring and pinions for my truck. I have an 87 with the 4 cyl so it should be the 8" rear end and the 7.5" front end. My truck should be stock gear ratios 3.73 IIRC and I would really like to get some performance back after installing bigger tires (I am also hoping this might help with the engine overheat issue a tad). Preferably I am looking for 4.22 ratios. From my reading they are most common in the Montero's, most of which in the junk yards here have some combination of v6/auto trans and are newer which means 8" front end. 4cyl trucks and montys are hard to come by especially the older ones. So my question is will the newer front differential housings bolt into the older trucks? also rear end compatibility???

Thanks Mike.