Notice I've also mounted the plugs for the injectors downwards.. No ugly injector wires!! (except cyl 1.. I kinda couldnt rotate it once I installed the rail because of the engine lift bracket. But im pulling the std engine out shortly so when I re-install it all, I'll fix it then) The guage is perm installed, and yes, the fuel reg is adjustable from the top side of the engine bay, and the gauge is clearly visible. it still sits below the plenum, lucky for me, I didnt go too high in the fuel reg position on the surge tank, as it would have hit the plenum. Strategic measuring I call it... it went something along the lines of this.. "Ahhhh I think it will be perfect ..... HERE" Im still running 4bar base. But I've got a bit of a tune issue at the moment I'm trying to sort out with the Load and fueling.....