I don't think I have seen your vehicles either! LOL! I've lived in the Mt.Iron, Virginia, Britt area for going on 25 yrs now! The XJ don't get out much as its not quite streetable yet. Starting next week hopefully I am going to be tearing the block apart to try and find why it has so much blow by. I swear in a 100 miles I can put a gallon of oil through it! Funny thing is the plugs aren't fouling out either. It has the typical cracked header too and needs all new exhaust. When I first got it I wasted money on lifting it instead of fixing things that were needed. It only has ~110k on it and I know the 4.0s can live for a long time as my 97 ZJ just turned 220k and its all original except the alt was just replaced two yrs ago.
Most of the time I am in my 96 ZJ though. If you haven't seen it I'm sure you know people who have. It is loud as hell as it is straight piped! Well recently mellowed a bit after putting a glass pack on it.
http://www.youtube.com/watch?v=lvgAgVfsP4U