Hi Gord
I've looked before for my 261 and 235 engines the currently available pumps such as this one from NAPA
http://www.napaonline.com/Search/Det...014058+3999999 all seem to have the angled outlet that doesn't match the original CMP fuel lines.
Some of the older fuel pumps I believe including the orginal 216 pump used on CMPs will fit (I'll pull some and compare them) but I would not trust them or a NOS pump because of the alcohol now present in the gas in many areas will eat the diaphragm. My solution was put a 6 volt electric pump in at the location of the mechanical, inline with the ignition. This also solves the problem of priming the carb when the vehicle has been sitting for a long time. Letting the electric run for a moment before hitting the starter sure shortens the cranking time.
Cheers Phil