Whoops. Sorry, I forgot that the '65 had a swing rear end. I'm not sure if the rear would bolt on but I thought I read somewhere that it did.
Part #'s and diagram are as follows:
I'm not sure where I got this picture but if anyone knows, let me know and I will give credit where due.
You could check to see if the system will fit by getting the Porsche bearing cover (item between the hub and caliper mount). This item might bolt on to the swing axle and would be the basis of the conversion. It is also identical to the item from a IRS bug.
If you can get me the dimensions of your bearing cover ('65 swing), I have a spare one here ('74 IRS) I could measure for you.
Does anyone else have any input ?
Sandeep