Evan,
You said it, not me.  If you ground the CSX numbers off a Shelby could YOU recognize it?
Here's an original.  Does it look familiar?  IT DOES NOT HAVE A CSX NUMBER.  It's a COB.  Please tell everyone that your discerning eyes can tell the difference.  (The FIA wheels don't count!)
So, a CSX minus the the CSX is a COB.  How easy can this be???
 
And since you are a true Shelby afficianado, you must remember that SAAC specifically asked Kirkham to place their ID numbers in the same location on the frame as thre originals to help prevent fraud.