I'm thinking if one had a set of heads that were cut for T&D's, and had a set of Dove HD's with the end supports, and also had a Bridgeport, one could whittle out a steel plate that was the thickness of the cut for the T&D's, make whatever clearance cuts necessary for head studs etc., connect the Doves to the steel plate, maybe even add some stock underneath if possible before tapping the holes so one could use longer studs, and as the HD rockers seem to be a stout piece, have a pretty strong setup with the loads spread across the steel plate, and added thread engagement on the studs. If one didn't have the Dove's already, then new T&D's would be the obvious choice- but if one (like me) had this combination of parts in hand (X2 by the way), and the Bridgeport, with a little out of the box thinking, could build it. And not have to convert to pushrod oiling. Pretty sure no one has tried this, but there are some out there with enough cross- experience with the parts to comment- please LOL....