:dunno:When you unbolt the crossmember you should be able to lower the whole thing untill the valve cover hits the firewall. You do have to readjust the t/c shifter but it shouldn't stop the trans & t/c from dropping but maybe that is your problem. Check the t/c shifter. I've dropped cases on 5speeds, A/Ts, 231s & 242s XJs, YJs & assorted Chevys, Fords & Dodges. The t/c should be resting on the crossmember. The exhaust moves down with the crossmember & should not be an issue unless it's been welded to the chassis. It should be rubber mounted. If it's welded solid to your Jeep instead, that would cause your problem untill the tailpipe bends or breaks loose. Check where the tailpipe goes over the rear axle to make sure it still has the rubber mount.