KZ400 Rectifier on a 650?

Will this work? 1976 KZ400 rectifier. It's a 5 wire three phase rectifier. The 650 is a 77, the last year of the three phase seperated reg/rec's.

Anyhow, is this something I can use as a replacement for my shot rectifier?

Yeah it should work ok. They are basically the same.

You can also make your own:
www.geocities.com/loudgpz/GPZdiy3phaseRectifier.html