Here is a remote-mount spin-on filter on a 1960 261. It is a Perma-Cool 1793 that has 1/2" NPT ports ans 13/16"-16 filter thread.

Here is the same head in another location and using a different location for the oil filter "mechanical" sender line. If I was going to run the oil lines past the exhaust pipes again, I'd put in metal "stand-off" tubes to clear the exhaust pipes (as was similarly done with the original canister filter's lines, even with the single exhaust).