Mike - It sounds like when your 1960 235 migrated into your truck they kept the 1960-62 style front motor mount instead of converting to the earlier style metal shielded mount. Give this
earlier thread a read that give more details on the 1960-62 mount. Those did not have a metal shield to protect from oil contamination and are rare to find a usable one. Most folks need to have theirs revulcanized as is discussed in that thread to reuse in the existing installation.
I seem to recall that there was a recent conversation on converting the 1960-62 front mount to use the earlier metal shielded mount, but I can't seem to locate it at the moment. I will keep looking tomorrow.