If you plan on lifting your vehicle at all(or in the future), then I would wait to cut the stops. When you lift, it pushes the bumpstops away from the axle and in several cases(myself included) you actually need extensions in order for your bumpstops to work at all anymore. One of the reasons bumpstops are there is to prevent your expensive shocks from bottoming out and being destroyed. Cut with caution. It may also affect future resale......