dump valves?????

[stocky]

currently running the stock twins which has two re-circ valves as this is my first twin turbo car here is the silly question:
to change to a blitz or turbo smart valve is it a case of having to get two or is there a fitting kit to allow it to have one valve instead of two??
 any advice would be great :cheers

[NurburgRob]

Fit the dump valve to where the one nearest to the airbox is and plug the whole in the airbox that it used to be connected to