http://www.gtr.co.uk/forum/270049-spline-drive-oil-pump-gears.html
Hi Chaps,
Supertec in the UK can supply different spline drives for RB26 pumps.
Also a US company, Spool I think can too.
Cheers,
Mark
I have one on my R32GTR. Exceelent little device and good value. Improves the balance in wet conditions massively (I live in the UK and it rains all the f&*king time!