glenn from the samba told me this
"Just to let you know the early 930 Turbos had a 4 speed because the 5 speed couldn't handle the horsepower. The 1978 930 Turbo had 280hp.
No experience with a Porsche tranny, but I got a Berg 5 and it handles the 180hp in my car.
If you want heavy duty.. go with a Bus tranny, but they're only 4 speeds"
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