I'll settle for part of one

and already have the red brake calipers

Have pondered the possibility of V8 gearbox internals in my Roadster though.
3.7 V6 v 5.0 V8
First 4.236 3.657
Second 2.538 2.430
Third. 1.665 1.686
Fourth 1.2387 1.315
Fifth. 1.00 1.00
Sixth 0.704 0.651