Putting a M66 ring mount on a M813 Truck

I have a couple of question on M66 ring mounts as follows: (1) Does the M66 ring with the three legs fit the M813 5 ton as it does on the M35?, and if so (2) What is the best or perferable way to mount the three legs to the cab on the M813? (Do you need the same brackets and reinforcement as on the M35 to mount this on the 813). Any advise on mounting, and pictures from members would be appreciated? Thank you.

1 yes
2 with the correct u bolts, and yes.
the TM for mounting this in now here. download and enjoy

M66 tm

What is the number for the mounting TM?

If you are actually going to fire a "Ma Deuce" off the vehicle you will need a backing plate installed inside the cab behind the seats. Otherwise you can have problems with metal fatigue and cracking.