Has anyone any expereince in fitting the 915 OS Giken Super-Lock LSD into a 914 gearbox?

No, but it should work if it's an early course spline 915 LSD.

If not then you need the output flanges, too.

At:

http://www.osgiken.net/products.php?Catego...&submit.y=7

They show:
PR014-HA 915/930 Type Mt various various 915/930 MT only COARSE SPlINE

Are the 901/915 dimensions the same including bolt circle?

Thanks for the assist!

jm

I would give them a call. I'm used to the GT LSD's. They list the 914,901, early 915 coarse splined trans under the same part number.