Wanted: 1 14x7 Shelby 500 SBP Aluminum Slot Mag

Interesting. The number BB232B should help ID. Without checking I can see differences in the back side. The front looks close. I'll have to lug one of mine to the computer for side by screen comparison. I don't know the back spacing on my Shelbys but that comparison needs made.
Blasted? Blast that blasted blasting?The first thought I had when I saw your photos was "****, they've been painted white." Mine have original crud and stains on a machined finish, unpolished. I'm looking into having mine remachined.which I take to mean chucked on a lathe and spun while a cutting tool recuts each surface. Whatever. That sounds non-inexpensive so maybe polishing. Depends on what car they go on
Okay, one more item on my "to-do" list.