I made the DIY and put up johns info for the Gilmer drive kit from kemotorsport and helped him with it.

You need to have the normal waterpump not the vanette waterpump.

And for the alternator the shaft should not be short at all you are ment to have the flat side of the pulley against the alternator not backwards so flatside out...

If you still have an issue just change to a newer and better alternater i.e a bosh one with an internal regualtor..

It is a direct bolt on kit, only difference will be the belt sizes needed if alternator is either high mounted or low mounted, but john can sort out the belts for you for the HTD belt

http://datsun1200.com/modules/mediawi ... ex.php?title=Gilmer_drive

https://www.youtube.com/watch?v=kO7d37j3iXk

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