I know of at least 2 others that offer separate Engine & Tranny.
AMT's 66 Fairlane GT/GTA has both Manual (GT) & Automatic (GTA) Tranny/s
so the Engine & Tranny are separate assembly's. Also the MPC 67-72 GTO's
have the Tranny separate from the block. At least all the 67's & 72's I have do.
And YES the 2 pc tranny is separate from the engine.
Does that mean the other version of this kit has a Different Tranny??