Outer Limits 4x4 Board

I need to get another Vacuum pump for the alternator on my SD25 in the Datsun 720. Has anyone got any idea of an alternative to the 400 odd ponies Nissan want? I haven't had any luck with the wreckers. Another alternator or vac pump that will fit? Any suggestions will help. I've also posted a wanted ad.

where abouts are you?

try a patrol one out of a sd33. same motor just missing 2 cylinders.