I Bought a Baja 1000 and then I purchased everything I needed to convert it to MT here are the pix.

Here is it after the conversion to MT. Gear ratio change, side plates, tires+rims, body mounts are also different and a servo mounting plate spacer.
The meat and bones of the RR/MT and Baja 1000 are all the same, the bodies mount a little different, and some of the outer shealds are different, the conversion to Baja won't cost you very much.