Clamp the the sensors to the knobs of the manifold.
The clamps still fall out of the head cover and the wire harness is always tangling in the hoses. That's why I like my SMANs...they fit in a case.
With the monster manifold i have and the 3/8 and 1/2 hose(s) I'd need a trunk to fit all that in. Been thinking about a nylon laundry bag or something similar to stow the whole works in.