Long time jeep guy (Cj7, M38, M715) first time TJ owner now that they are 20+ years old....Thought I was doing a good thing finding one that was already upgraded with RE parts and others and slowly suffering the pains of being out of the loop on that stuff...Current dillema is rear output ( some sort of very short) seal leak plus erratic speedo led me to pulling that apart and I can't find seal numbers for a match....Seal seems to be just over 3" OD and 2" ID...Most of the ones I can find info on are more like 2.79"ish.....Anyone? TIA...