Here is the pic:


and here is the item description:
"so im selling for a friend of mine. everything in the pics you see is what you get. most of the plumbing is done, you just need to install and run the air lines. the bags and everything hasnt been used on a car, so pretty much brand new. also has misc. wires"

Any ideas of what else I would need? if these are decent product? are the valves good/big enough etc? How much would install be? Thanks