Hello,
I used an original 901 shifter and shiftrod (lengtened 110mm and twisted) and fabricated my own console to mount the shifter.
Had to butcher the tunnel though but it was a racer, soooo....
Parts source? Well, no one in particular and sometimes it's not what you know but who you know!
For anyone who is interested, the car is for sale now, check it out at
www.speedservice.nl. Sorry for the plug

.
Cheers,
Richard