The V2 slipper is designed to work with the G2, G2r, G3 and G3r chassis, it wont work in a stock type chassis without hacking it to pieces. As for the singlespeed, yep, just buy the coupler and fit it into the 2nd gear output gear, then you can remove the shifter, dog, 1st gear output gear & 1st gear idler- you just keep the stock tranny case & dont have to modify the input gear shaft.
