[Supa Ninja]

In '74 VW changed the steering shaft from the large splined to the narrow splined. Now what does all this mean, you ask? Simple if you want a Porsche steering wheel in your Supa and it's a '73 or earlier then you have two options, 1) drill out the rivets in the hubs of both a Porsche wheel and a stock '73 earlier wheel and swap hubs(when I did it the wheel was never centered properly), or 2) install a '74 1303's steering shaft, and then simply bolt a Porsche, or '74 on steering wheel on and your done. The horn and blinker turn off will work normal as well. I was going to write a tech article but the procedure is very simple.
You'll have to use a '74 only steering shaft because in '75 VW went to rack and pinnion.

SNN