I just made this fuel/sensor distribution block. I donít know if anyone else has had this idea but I figure I would share. It has 6 ports, two of the ports go out to supply each head, two of the ports bring fuel in through the check valves (one for D2 one for WVO) and two of the ports are for sensors (one for temp and one for pressure). The block itself cost me about three bucks. It is a cut off piece of 6061 aluminum 1.5Ē bar stock. I drilled through the block on all sides so all the ports would meet in the middle and then taped each hole, easy as that. Being a check valve system, the pressure and temp sensors will read the fuel that is selected. Let me know what you guys think or if you have any questions about it.