RB Valley plates

My solid plates were designed to work with TF 270 heads.
Valley Plates | AR Engineering

They'll also work with the TF 240 heads if you use the batwings to seal off the valley. With 270 or Indy heads you don't need the batwings since the heads sit on top of the edge of the valley. Just run a bead of RTV on the edge of the valley and then bolt the head down and you're good to go.