The majority of Buick Grand National, Regal Turbo T's & T-types, etc., all have 8.5" positraction rear en ...
The majority of Buick Grand National, Regal Turbo T's & T-types, etc., all have 8.5" positraction rear ends in them. [Regal base models may have 7.5" open differential units, meaning non-posi rear end ...
