Sudhir

You may well beat me to it, as it's going to be some time before I can save
the funds to fit my engine & Porsche trans. I have all of the major bits
(van, trans, engine) but not the money for adaptor kit and
fabrication/labor.

A Wellington outfit, Powerhaus, says it can adapt the trans for a hydraulic
clutch.

Someone reckoned the VW and Porsche flanges are the same diameter, and the
CVs are interchangable. And having just typed that, I went to the basement
and tried a CV from my derelict V8 1975 bus on my Porsche 915 flange.
Perfect fit. Your VW CVs will bolt to your Porsche trans. You may need
different-length axles however if the 904 trans flanges are higher, in a
different position fore/aft or are spaced wider/narrower than your VW
trans' flanges. I suggest Sway-a-Way, though they did not bother to reply
to my query about axles.

Best of luck with yours. Wish me luck with mine!

Andrew