Saw this late but I purchased a NS Aristocrat with a luthier installed Bigsby. Works well will send pics if it helps you. I never have liked Bigsby and never use it but the guitar price was great and have not got around to changing it back
Cool. Looks very similar in break angle and overall geometry to a B7 instalation on a Les Paul. If the break angle of the strings is a bit severe with the B7 tension bar you can always shim the B7.