I too purchased an 8 window bus w/lift and floor rails down left side. I'm in aviation and those rails are about the same ones we use in aircraft floors so that we can change seating configurations, cargo configs, bulkheads, cabinets etc. Anyhow...I decided to leave mine in and use them as design anchors for a modular approach to my interior design. This should allow me to, for example, firmly attach my sink/stove/countertop module to the floor, move seats forward or aft, hang cabinets (there are tracks above the windows too. Not discouraging you from removing them...just saying sometimes it's easier to find a creative way to work with what's there rather than ripping out floors and tearing up knuckles