Hey guys, Thanks for the info on clutch head vs slotted and for the explanation of the rubber grommets on my mounting bolts.
The '47-'54 FAM shows slotted head screws to mount the VR. It's misleading for early AD trucks.
An old post & pic on Stovebolt said that clutch heads were used in '54. Notice the difference in the location of the screws in the covers. The '47-'54 FAM and '54 Shop Manual show them through the top at two corners. I know that diagrams and photos are often shown for the wrong year.