I don't know why they put them down their in the first place. Almost impossible to get the lines off with thew motor in. We sell the kits to put them on the left or right or just under the MC. I really would not use an adjustable prop valve on the street They only provide propotioning and do not meter anything. Our combination valves start at $45.00 and up. Brass , aluminum, chrome plated.
These are just some of them.
http://estore.websitepros.com/126980...Categories.bok