I found these ratios online
gear - ratio/overall ratio/(rpm) mph
-----------V10-------------
1st - 4.37/13.46/(8700) 48
2nd - 2.71/8.35/(8700) 77
3rd - 1.93/5.94/(8700) 109
4th - 1.50/4.62/(8700) 140
5th - 1.24/3.82/(8700) 169
6th - 1.04/3.20/est (8400) 196
Final drive ratio: 3.08
-----------V8-------------
1st - 4.37/15.13/(8250) 41
2nd - 2.71/9.37/(8250) 66
3rd - 1.88/6.50/(8250) 95
4th - 1.41/4.88/(8,000) 123
5th - 1.13/3.90/(8000) 154
6th - 0.93/3.21/(8000) 187 * drag limited
Final Drive Ratio - 3.46