It's going to be an updated version of the Sunn 1200S 6x12 cab. I've always heard good things about Don's work at LDS and I'm excited for the build. He's starting it up this week, should probably have it ready in a month!
6x12, with 6 Eminence Delta Bass 12" speakers, tuned cab for bass. Recessed handles and tilt back casters. Original sunn tolex, silver corners, and convincing silver grille cloth.