Savage X 4.6 3-speed and reverse modules?

[snakemau]

Hey I posted this in another forum, but this one seems more appripiate so:
I have the Savage X 4.6, but would like more speed and reverse (it can't climb trees!). So it is possible to have the 3-speed module and the reverse module installed? Is there enough room for both of them? is it a good idea? will I have to upgrade anything else? I'm getting a DX3S radio so won't need the mixer for the reverse module.

Any suggestions?

 

[Rolex]

Reverse is a 'drop-in' module that comes with all the linkages. You can also add the 3 speed conversion. You will also be able to order a higher ratio 3rd gear for it.

 

[TGL]

And a separate servo to engage/disengage reverse.

 

[snakemau]

Which servo could work? I don't know much about this could you be more specific please? Thanks

 

[Rolex]

Any standard size servo. It only has to push a linkage in or out to shift.