Accomplished a huge milestone after a couple weeks of hand-wringing and issues. Resolved the leaky carb with new set of gaskets (spacer, base and bowl cover) and also gave the carb the once over to make sure all the internals were good before sealing it up. Which was good because I noticed two big things...one of the metering rods was missing and the other one wasn't in it's hole in the bowl so the metering rod tee was stuck in the open position (shakes head). Also looked like one of the bowl may have been misaligned.
After putting the carb back on it still didn't have much power and was still pinging under load. After working with timing and other carb settings, I decided to pull spark plug wires to see if it wasn't firing on all cylinders. It wasn't. I pulled all 4 wires from the left bank (2,4,6,8) and there was no change in idle. Poked around with that for awhile; had spark and plugs were good (albeit absolutely clean), checked carb more for fuel related issues...opened oil filler cap while engine was running...the rockers were barely moving, I didn't torque them down, all the bolts had loosened. I'm pretty surprised because I made a mental note to never trust myself while rebuilding the engine that I had properly torqued everything down, so I often double and triple checked. Anyway...pulled the rods and they were looking good, except one wouldn't come out...it was jammed into the lifter (see below). I actually found two lifters where the oil metering disc and pushrod seat had come out. I retrieved the pieces, snapped them back in, checked to see if the rods were bent and torqued everything down. Started right up.
The milestone? Yesterday was the first day in 8 years I've ever driven this with all 8 cylinders (drove it a whole 3 minutes when I first got it and had no power) and man, did all that power feel nice! My boys were laughing at how I couldn't stop grinning all day. And being a nice day after the Safer At Home order was lifted in my county in WI, people were walking about and I got a lot of looks, smiles, thumbs up and requests for burn outs. Still needs an alignment bad (some squealing around corners and at speeds over 35) and fenders, doors, hood and core support all need to be loosened and re-aligned. And I'll still hand it over to my mechanic to do some final tuning.
The color you see (particularly the hood) is what the final will be close to, satin black.