It wasnt that hard at all. i had the cut the front shaft and body down for it to fit, because i accidentally did the front too, but there is no differentce in the front between a mono and 2 shocks, it works identically the same IMO, except you save some weight. the back acts as a bit sway bar, and it works really great. rumors say that it drifts well with a mono shock, ill put that to the test when my stuff gets here.