Question about Porsche 901 Drive Flanges

[rioprelude]

I installed a 1969 Porsche 901 transmission into my 66' beetle that has the early 4 bolt drive flanges. I've already purchased the full 930 setup (Stub axles, cvs, axles) and was hoping that it was possible to swap late model 901 flanges (6 bolt) to an early transmssion. I believe this was discussed in the following thread but wanted to verify:

http://www.germanlook.com/Forums/showthread.php?t=4236

Is this swap possible?

Thanks!