so i have a 2000 xj and it had a bad tranny mount which made the transmission sag a little so after killing myself trying to find a mount i found one and put it in then after that i have had this bad driveline vibration and i cant figure out why this is any suggestions?? i also have a two inch lift if that helps...

 

first time i did my tranny mount i didnt get it in straight. had vibes too. look at your driveline and see if its straight. if not, either the crossmember got turned around or the tranny mount did.