Adrenaline Offroad in Burtonsville,MD
Adrenaline Off Road
Always heard good things about them. I had a quote of about 1600ish from them for re-gear to 4.56 or 4.88 but i haven't had the money to do it.
Appalachian Off Road -
Don't know anyone who have used them.
and then there is Adams Jeep up near Aberdeen. Nothing but good things heard about them as well. Adams was expensive if i remember my quote. I think 2800ish with limited slip added.