The kit includes the duct work and new grilles on the front, you need brackets for the side skirts and looking at it when it arrived at the body shop it had plenty of hidden bits, lots of untainted black plastic, suspension is standard, I think lowering would ruin the ride, not overly luxurious as it is so safer to leave it as BM made it for me.
You also need the car reprogramming to ignore the loss of fog lights, or fit some DRLs as I was planning, decided to keep it stealth in the end

)