i have a 8.25 in my 00, you want to look for the 8.25 with 29 splines on the axles they were in 00 to 01 cherokees the 27 splines are garbage, they were in early cherokees the 29 splined 8.25 are just as strong as the dana 44 rear witch i had stock in my 1966 cj5 it was bullet proof and i never got stuck , stock front and rear no lockers, i have 32 super swamper tsl radials on my 00 and wheel it once in a while with no problems