Pulse Studio
TubeTech
Well all the parts are still available and the plans. You could build the 3 way version, even better than what you had. T15's still come up on e bay.
I have 5x spare T15's available if you ever decide to have another go at making them Ronnie, they will be reasonably priced or up for a swap, I managed to find a brand new pair in un-opened boxes a few months ago, a very rare find, and 2x original ITT 4001G's that are put aside for my next speaker project, maybe the Daline or back to my original idea of the T15/4001G in a 3/5a enclosure.
Paul