I drilled mine as have others in the little cubbies on each side of the trunk. Slipped the cannisters through and mounted on back of trunk. The hoses tuck neatly beneath the carpet when transitioning from the cubbie area into trunk. I’ll see if I can find some pics.
Contact Mark Jorgensen ( mjorgensen@woodhouse.com ) as he and crew have installed hundreds of MCS suspension systems. You can also call him at 1-800-889-1893 or 402-677-2935