Because it is not just floorboards, you'd need a new shifter, current one is too short for floorboards. Likely, the brake pedal might need to be custom too, depending on the floorboard angle. It is not as simple as just hacking in floorboards. The controls are not the right length. Even right now with pegs, you can't even use somewhat thick toe-ed shoes like boots, not enough space. With floorboards, there is not enough space for normal shoes to get under the shifter. Overall, it is a lot of custom parts that need to be bought, many discarded, maybe even have a small metal workshop.. I live in a condo..