To prepare for installing the new shocks I went out yesterday morning and hit all the bolts with some PB Blaster and let it soak over 24 hours. I hit them all again before I started this morning, and then I wire brushed the threads on the tops of the front shocks. Aside from wishing I had some ratcheting box end wrenches, it went really smoothly. I'm really glad I have an air compressor and a 3/4" impact gun and 3/8" air ratchet. They made the job a lot easier. I used the impact to take off the lower bolts on all four corners, and the air ratchet made taking out and putting back in the bar pin bolts on the rear shocks a breeze. All I had to do was break them loose by hand and then use the air ratchet to spin them out and back in, then finished them with my toque wrench. So much easier than sitting there trying to turn them out 1/4 turn at a time or messing with a super long chain of extensions to try and spin them out by hand.
I might need to go back and redo the tops of the front shocks though, I'm not sure if the bushings get centered in the mounting hole correctly, the shaft of the shock might be resting against the bracket. Not a big deal though.
I also got the coil packs all swapped out, and verified that the dealership did in fact swap the spark plugs over from my old engine (they were practically brand new when the engine died). I'm not sure if it really needed new coils or not, but it certainly won't hurt and now I don't have to worry about them going out on me. I'm going to hang onto the old ones to keep as spares, never know when something might happen and need a quick fix.
Also put in the AC Delco air filter. I had used an STP filter from Autozone last time, and honestly those things are terrible, the gasket can't stay on properly to save it's life. I got the AC Delco filter from Amazon for probably less than the STP from Autozone and it's a million times better quality. The rubber gasket around the edge for example is fixed in place so you don't have to worry about it not sealing correctly. The STP is simply slipped on, and I noticed that at least one spot didn't want to stay in place properly.
And lastly I put a brand new relay in place of the old relay for the starter solenoid circuit. Again, not sure that it's really the problem, but it's not going to hurt either. Just over $6 shipped on Amazon prime as an addon item and it's an authentic GM replacement (Denso made in Japan).
Still a ton to do, but at least a few more things are scratched off my list.