am I correct to assume that most people on here torque up the rear a-arm bushing before mounting the whole arm/bracket back onto the car, rather than following the shop manual's instructions of removing the exhaust and torquing it when the car's full weight is on the wheels? I read a few posts that seemed to say that's how people are doing it, and that's what I did yesterday when I replaced them.

I just can't imagine how anybody fits a torque wrench in there, especially when the car is already sitting on the ground! these instructions made me question the sanity of my book, or am I missing something?