there is no way to "modify" the shocks themselves to allow more drop or more suspension travel, and it is a BAD idea to remove the bumpstops completely...they are there for a reason and trimming them is just a way to cheat a bit more travel out of the suspension before it starts hitting the bumpstop...most real coilover systems have bumpstops but they also have shorted shock bodies and everything is carefully designed and tuned to work in harmony in a variety of road shapes/conditions and is another reason they are FAR superior to a coilover sleeve and shock combo......even just regular springs and shocks are a better combo, but thats just my opinion.....but coilover sleeves seem to have issues.