Thanks for the compliments, Dave.
It sounds even better than it looks. Bill's joinery is incredible...all solid hardwoods (no veneers or plywoods) and no damping materials (insulation batting) and it doesn't have rattle one!
That particular cab is loaded with Celestion greenbacks, but just as easily could accompany any 12 driver. JBL D-120's are a Boekhoff (and Garcia) favorite, and go particularly well with Fender and Fender-esque tube amps.
My custom Sultone Twin Reverb cab will be loaded with Weber VST D-120 clones, IF I ever get it that is. Been waiting over a year because I haven't made enough of a pest of myself, apparently. While my wait has been extremely frustrating and despite my having paid in full in advance, in all fairness to Bill, I understand he's had a multitude of personal problems this past year. Having said that, I do understand (VIA harmonycentral.com) that he has produced cabs in the past year, so my cab has apparently been pushed back due to my relative lack of complaining.