If you use the search on the forum you will bring up a ton of info about using a slide carb motor in the MT.
All you need is this.
http://www2.towerhobbies.com/cgi-bin...?&I=LXCXF8&P=7
It converts your stock linkage over to a slide carb setup. It's what I use on my CV-R that has a slide carb.
Some people also like this Ofna version
http://www2.towerhobbies.com/cgi-bin...?&I=LXBM06&P=7