Making a 5 speed savage.

[tt-01 mamba]

Hi,
has anyone ever tried making a 5 speed savage?
Put two 3speed trannys end to end. Get rid of the plastic box and make some 5mm aluminium cases?
let the first tranny get upto 3rd gear first then let the second one get to 3rd gear.


1st gear=2.36x2.36=5.5
2nd gear=2.03x2.36=4.79
3rd gear=1.53x2.36=3.61
4th gear=1.53x2.03=3.10
5th gear=1.53x1.53=2.34


using a MMM on 6s/ running CEN diffs/ baja 5b wheels and 47/20ish gearing 70mph should be fairly easy to achieve.