New project - Brushless Revo

[fastbaja5b]

Hey guys starting a BL Revo project, just bought a Nitro the other day, lots of Alloy goodies on it, very sturdy. Have ripped the Nitro motor out to hopefully fund some of the conversion.

Electrics I already have for this are:

MMM V3 ESC
Spektrum Radio
2 * 2s 5000 Reedy Hard Cased Lipos

Any ideas what motor and gearing I should use? I prefer the Medusa motors and we have to run on 4s Lipo

Also any weak points that need to be upgraded. Front and rear diffs have been done, unsure on centre, still have to check.

Aiming for top speeds around 40mph, is this a realistic expectation on 4s Lipo. Would like to lift the front end on occasion as well.