OK, your mid-60s 6 takes the new "V-8" style bellhousing, which does NOT usually have mounts the way the old 235 bellhousing did. But, either aluminum or pressed steel bellhousings are available aftermarket, and can be drilled
and welded to fit the stock mounts. Disclaimer: haven't done it, have seen it done.
As for the side mounts, more weld and fab, I guess. Dunno for sure.
George
'53 3600
