I have one of these sitting on my shelf also.
No parts available that I'm aware of
A guy here on the Forum had two that he sold for 12k the pair with clutches, etc .back in 2015
https://www.gt40s.com/threads/ricardo-gt-650-6-speed-w-extras.47351/
There wasn't a Z chassis used in F v F
We used Cobras track cars which we lengthened the wheelbase on , due to time constraints.
We did the 250 and the 275 gtb bodies
We did these from scratch
Graziano out performs the Porsche trans in all applications where power and torque capability is necessary ..also in price too
To be honest there is very little need to mess with gear ratios , once the drop gears are installed in the Graz transaxle.
Bill
all of those parts are included with our deluxe plus SLC kit packages.
Rack is custom made in the UK now and its only available directly through RCR,
Next batch shipping April 28th btw
DaveC , sorry I beg to differ
The SLC actually has a more successful race pedigree than the Ultima.
Any Ultima records were done with highly modified cars.....ours were done with the same chassis and suspension geometry as we sell directly to customers.
We also sell all of our full race spec...