Wolf Creek Racing aluminum CV axle adapters -- CV side
These bolt to your diff stubs and your hub flange.
WCR CV kit is $900/pr:
Kit iincludes cryogenically-treated cro-moly EMPI high hp off-road 100mm Type 2 VW bus CVs w/ shortened high-hp zinc-plated EMPI 4230 axles, boots, all 4 adapters and grade 8 hardware, CV grease, and detailed instructions. Hardware shold be safety-wired. Said to withstand 400hp. Smaller than 930 cv diameter means less chance of interference w/ exhaust and Datsun 510 underbody.
Again, these are not genuine Porsche 930 CVs, and are not Porsche or GKN CV joints.