I found a grand prix 2+2 rear for sale. Seller ad claims its a 7.5" posi what would the ratio be in this rear end? Asking $500 and its a drum to drum complete rear end 56k on the donor car.
All 2+2 models were fully loaded and came equipped with a corporate 305 four-barrel, the 200-4R four-speed automatic transmission and 3.08:1 rear axle ratio
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