Good eye!
The third cabinet is a Street Fighter II Hyper Fighting that my brother picked up at a garage sale for $150. The cabinet will get some much needed cosmetic restoration, but the important part is that the monitor is crisp with no burn-in, and the board looks brand new.
I was meaning to do this for awhile now, so your post made me do it. I just made a blog for this project too:
http://streetfighterarcade.blogspot.com/The marquee retainers are L-shaped brackets that I got at Home Depot. They came in 4 ft. pieces so one piece made 2 retainers (4 needed for each cab, 2 for marquee, 2 for bezel). The brackets cost about $4 each and the ones I got were 1/16" thick and 3/4" for each side (they come in many different sizes, widths, and thicknesses). I primed them with Rustoleum Clean Metal Primer spray and then painted them black with Rustoleum Painter's Touch black spray paint.
And the CP will be the best part, I can't wait either!