If you are wanting to convert to the monster truck it is a very simple thing to do with the Fun Factor. I originally bought the Cen ATX Fun Factor and converted to a monster truck. The only real changes you need to make is to change your tires, pinion gears, body, and body mounts. I had 15/19T pinions on the ATX, and now I have 11/14T pinion gears. Hope this helps you.

Oh and as far as a radio I would recommend the [link=http://www.killerhobbies.com/items/Radios+and+Receivers/spektrum-dx2-0-dsm-2-channel-radio-w-1-z270-sx-1-z590m-sx-spm20200-spm20200-detail.htm]Spektrum DX2 DSM[/link]