I am letting go of my project, life intervened. I have a new reversing gearbox that I machined custom flanges for so that I could use standard 94mm CV joints. I also have a CV joint adapter for the splined shaft of the Hayabusa engine made by Mike Downs. I paid $300 for that. I have attached a video, and also a link to the CV joints from Taylor Race Engineering. They are GKN with a stub shaft for welding into a tube to make a custom driveshaft. They were $195 each, I have 4. 2 of them have been machined down for weight and are disassembled, and two are stock. Prices below.
$1400 for the gearbox
$1600 for the gearbox with flanges
$150 each for the 2 new CV joints
$175 each for the lightened CV Joints
$200 for the Hayabusa CV Joint adapter
$2200 for everything.
https://www.youtube.com/watch?v=Y7kjExgI4I8http://www.taylor-race.com/part.cfm?id= ... ro&popup=1