I haven't done one in quite a while but I seem to recall removing my exhaust system. It looks like you can wiggle the trans.out but it's too close. The FSM says to disconnect it from the manifold but doesn't say to remove it. If you're not on a high lift though I think it gets in the way if you don't take it all the way off. It hangs down and cuts off driver's side access. Another gasket, maybe a broken stud. Be careful. Probably right to do it at home.
Edit - actually there's a whole extra set of small problems that can crop up on this job. You'll probably want to remove the console to get to the shift lever. That's a pain, and the three screws in the change pocket are probably rusted and one or two will break. The exhaust system. Might break a stud. You'll probably realize that the slave cylinder hose is cracked and ready to blow. You might find it very difficult to get the hose broken free because it's been on for 35+ years. You'll realize that the rear engine seal is leaking and decide to change it while you're there (it's easy).
Here's a tip on the driveshaft bolts - put the wrench on the nut, jam it against the body of the car, and turn the driveshaft by sticking a screwdriver in the u-joint yoke.