Actually, there's a good point there. Trucksyd was referring to the AT4 series.
Just which years did that cover?
Got a couple of AT series Dodges kicking around in paddocks around here as well as later series, some seem to have the 420 box others the 435, some seem to have the centre mounted transverse front crossmember, others the side hung type (a la Valiant V8).
Couple of variations on the rear xmember as well, some hung off the bellhousing, some on the xmember itself. May depend on just which year manufactured?
I know firsthand that locating the exact replacement mounting rubbers can be a bit of a bitch if you are using later model boxes in earlier series, or other applications.
Either way, I would have thought that the blocks themselves would have been drilled and tapped to accomodate either type of mount, although I have some strange idea that the truck V8 318's were a different casting from the normal Valiant V8 blocks.
But, as usual IDSTBC