[chrismorse]

First, make sure you have the bushings pressed all the way in, both sides.
Next, take a piece of all thread, a couple of washers and nuts to open up the mounting ears, so you can slip the trailing arm into the chasis mounts.
finally, I have heard it recommended to not tighten the pivot bolt, untill the car is sitting on the ground, so that the bushings will have zero torque, (resistance), at ride height. If you tighten the pivot bolt with the car in the air, the bushings get a lot more stress when lowered to ride height. Not sure how serious this is, but worth considering. Hopefully others that have been there and done this will comment,

Don't forget to move the height adjusting cam on the trailing arm to a neutral-centered position, so you don't run out of adjustment when corner-weighting. I went with the "quick change" Elephant spring plates to facilitate corner weighting.

While you have a lot of stuff out of the way, check your rear anti-roll bar mounts. If you are upgrading the bars, might be good to do a preemptive reinforcement, as the middies are notorious for ripping the mounts off. ( my dad ordered the car in 74, with carrera bars, 20 & 18. He was a very easy driver and at some point he managed to rip off one of the rear mounts and his shop just removed the rear bar!!

beware the slope,
chris