It will have to be the same diameter, for sure. They only questions are width (thus depth of well) and size of hub (which also impacts well dimensions)
Neat! I'm very interested in what they come back to you with. I didn't think to ask my guide, but now I'm super interested. I'd love a full size spare!
Mind telling me where you got it done, how long it took, and the tint percentages? I apologize but I don't see it in the thread and I'm also in SoCal on the shortlist for my R1S and I'm proactively shopping for vendors to basically do exactly what you've got here (mine is also black).