The pad on the rear mount for my 3-speed ('53 3100) appears shot and needs replaced but is held on with rivets. For those that have done this I assume you cut the rivets and replace with bolts?
http://www.chevsofthe40s.com/detail/6243/Chevrolet_TRANSMISSION_MOUNT_REBUILD_KIT_PAD_BOLTS.html

This is my first truck with a 3-speed and I also assumed that the oil fill plug is on the passenger side about half way up. Then I read this in my manual in the universal joint assembly section: "Remove speedometer drive gear and fill housing with transmission lubricant".
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0452.htm

Which is correct?

Allan
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1951 GMC 1/2-ton
Two 1953 Chevy 3100 5-window