This is a old RC10 GT that I converted it uses a saddle pack and a x-factory 4 gear transmission. so far it is great very competitive at the track. Also for anyone looking to convert a car to mid motor the 4 gear is a big improvement I tried a 3 gear first and it had a tendency to nose dive and unload the tires coming off the corner. The 4 gear fixes both problems
here is a short video of it in action. The chassis was slaping the ground in this video but it has since been corrected.
http://www.youtube.com/watch?v=Y07HASlHMI4