I worked on this thing some more. I've been hitting the OT pretty hard, so time for it has been sparse.
Brake lights didn't work but turned out to be a missing fuse.
Amazingly aside from that, a burned out lowbeam, and a bad marker light, they all worked.
Brake leak is a passenger rear wheel cylinder.
The spark plugs and wires I got are 90* at the plug and won't work with my manifolds. I kinda messed that up

. Any way you turn them leaves the wire touching the manifold. Ill use these on the Bee engine and pick up another set of straights.
I came up with a temporary plan for the rear springs. I'm going to pull them both apart, remove the busted leaf and the matching one from the other side, then reassemble alternating each leaf side to side. The leaves from the non flattened pack and the arched ones should cancel each other out and make them even enough to get me past inspection and until I can get new springs.
I haven't drained the oil yet. That will tell me if my fears are correct. Just pulling the dipstick shows BLACK oil with 70's lowrider style metal flake. Which was the reason for thinking I may have to swap engines.
My cheap tires seem to be holding air. That's a huge plus.
And I still have to figure out how and why the hydro brakes work great but power steering doesn't at all

. I'm guessing the steering box is all gummed up.
After I get the inspection and title process finished I'll hit it pretty hard. Getting stuff cleaned, fixed up, and painted. But for now I'm just doing whatever needs done for that.