Yea I'm preparing myself for a large car bill.I Haven't really had one on my 2000 XJ Cherokee.I've had it for about 5 years,and very little has ever went wrong with it.I Love the XJs.Mines lifted 6,1/2 inches,riding on 35sx12.5..The best little truck ever built in my opinion,except for the old Toyota FJs,land cruisers,Gotta get one of those..Anyway,I may have a friend who says he might want to put it in,but I'm nervous about him doing the job and not a shop.My friends like a freelance mechanic.He knows his stuff,definitely better than me.But the core replacement is a BIG job,on any car.I wouldn't do it.Well I'm gonna order the stuff,and see what happens.So much fun