i had an NSU spider and the ports are really weird!
its a 1 rotor P port, with similar dimensions to a 10A rotary actually.
it actually has 2 intake ports, one TEENY primary port, that opens late, and closes late, and then its got one bigger port under it.
and a 2 barrel carb bolts right to the rotor housing.
hell this literally is the car right here...
http://www.rotarycarclub.com/rotary_...ead.php?t=1670