It might be time to rename the car from Projekt Fahrfromcruzin to The Smilemaker. No idea where the red stuff came from, but I pressure tested the entire cooling system for 3 days and nothing is going where it shouldn't be. Which means, after also finding the cause of the surging at idle, we got a runner! Got the 16 year old tires replaced and have been able to cruise around town a couple of times. It's currently almost impossible to not spin the tires (I have a progressive linkage to install to maybe help), but it's hard to not giggle and laugh every time the rear end breaks loose. An alignment is the next step and then we are on to body mounts and maybe into the interior.