The Arco stuff was back in the 70's and it didn't do much. I like to add 1/2 qt of trans fluid to mine the day before I plan a change. The high detergent cleans up the insides.
Anyone know who owns the car or better yet, where he got this set up. It was parked on the side street, white with a carbon fiber hood. That set up is just too cool.
I bought GM Resto Black at a Chevy dealer a few years ago. It's that semi flat eggshell paint they use on frame parts. I'm going to order up another gallon soon. I'll post the part number when I get it. You might try Eastwood too. They have all the black shades.