I had a '67 Camaro with posi; no problem cornering. Also the majority of T-buckets (and performance street rods in general) out there run posi's (limited slip). That's primarily because without that you can forget about ever getting it to hook up well with the street.

As far as the clutch friction goes Bryan is fundamentally correct, although I doubt if he or anyone else really knows the technical design specifications well enough to pinpoint the minimum weight car for a specific application.

As for me, I would not build or own a car or truck without a 'posi'. Especially not a performing street rod ...............

Good Luck, Kitz