I am installing a set of flowmasters on a 95 GT and I wanted to weld the tips onto the mufflers before I put it in the car... is it possible to install them as a complete assembly, with the tips installed on the mufflers?
The pipes that come out of the mufflers and go over the axle and have the tips on them
correct, and Spector is correct. You either need to cut the old exhaust or drop the axle to get exhaust in and out of there. Welding the tips isn't the greatest idea, you never know when your going to need to work in there again.