Final drive ratios with 3.73 ring and pinion (current ratio in KTRE 12 bolt)

1st  9.92:1
2nd 6.64:1
3rd  4.84:1
4th  3.73:1
5th  2.76:1
6th  1.87:1

Final drive ratios with 4.10 ring and pinion (old rear had 4.10's)
1st 10.90:1
2nd 7.30:1
3rd 5.33:1
4th 4.10:1
5th 3.03:1
6th 2.05:1

Final ratios with 3.42 rear (when the car was stock)
1st 9.10:1
2nd 6.09:1
3rd 4.45:1
4th 3.42:1
5th 2.53:1
6th 1.71:1