I am going through the same dealio... Failed on Nox... 9xx @ 15mph and 95x @ 25mph.
Game plan was to test O2 sensor... change plugs / cap / rotor / Sea-Foam Engine / Change Oil.... And then I keep reading about using a couple gallons of Denatured alcohol mixed with a 1/8th - 1/4 tank of gas...
stupid mud hahaha.. I managed to make it to the SC forum and will be checking it out more often now hopefully. Maybe wheel with you guys a few times.
I was in the red cherokee with no doors
~ Kyle
Have you hit the junk yards sharpie?? Last time I was at the Fremont yard I saw 3-4 xjs with d44's in them. Think they are like ~150 for the axle. Unless you catch it on 1/2 price day then you are all set with a d44 for like 70 bucks :)