The G50 uses 930 size CV joints and they are a fairly common fitment for sand cars.
G50 axles will be too long, one option is to use carrera 4 front output flanges as they are type 2 size CVs, you can then use stock 944 axles/CVs
Kennedy can do you a new flywheel to suit Porsche clutch, or you can copy what Wally did with the shortened bellhousing, main problem then is the ring gear on the flywheel is a smaller diameter.
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