Wow Joe. Amazing. I feel lazy now. Wish i had your energy. But Damn. What a collection. Very impressed.
The biggest changes to my Special have definitely been chassis and brakes. It's changed a lot since I got it in 2009, going from 2 spd, 4 wheel manual drums, and 2bbl carb to 4l60e, 4 wheel power discs (12" Willwood Dynalites up front, 11" Cadillac out back), and 2bbl Holley fuel injection. It took a LOT of quality time with a grinder and welder to get it all to fit, and there'll be plenty more of that when I attempt to shoehorn the next shiny piece of the puzzle in... Btw, those are some gorgeous cars you guys have!