http://www.hot-racing.com/index.cgi?...TE12GX01;c=430

Does or has any1 have/had this gear case and how does it work, all pics I've looked at haven't had a protective case over the pinion/spur gears if I do choose this gear case/mount do I just buy the part that goes over the pinion/spur and if so does any1 know which 1s would fit