JAT
Guru
Hopefully for you it is a normal rotation engine and you can get parts from NAPA for massey-ferguston. Caseing and impeller are the only things different on the contra. I'm pretty sure the went to normal rotation when the borg-warner velvet drives came out. I've been in the bilge so much lately that I may need to put in a third helm down there.
Well, I get no joy from my results.... My starboard engine is definitely a "contra-rotating"... so I will either end up sending the pup out for rebuild or as a friend pointed out....installing an electric pump.