did aspens/volares with the lockup torque converter have a different rear end ratio like 2.93? (with a super six) compared to a regular 1 bbl slant with no lockup torque converter? (2.76?) my car is a 78 volare with no lockup and it originally had a 1 bbl, but I have a parts car that's a 79 aspen with an original super six and lockup torque converter