Looking to convert an MBX5T

[Shimmy]

I have been using that actually, brilliant, really handy.

I think it was about 17t, the speed is about 40, I would like to have around 40-45mph, should hit my target speed of about 60 kph.

Would need a pretty big area for anything much faster I think.
My Losi Desert truck is geared for 50kph and am trying to find a couple of larger areas to use it (although still perfectly usable in smaller areas, just trying to find a spot where I could use that speed offroad).