That is not an option. I have dealt with two TH400-s that had pump-mounted bellhousings(to be used on Supra and 300ZX) and they were both PITA to deal with. The threads on the pump are not meant for that.
Also, the Glide in question has Dedenbaer case, so we try not to ruin it.
Mike, does the threaded nut inserts "cap"-s that will be over the midplate surface hit the engine mounting surface on the BV6 or will they clear?