For sale? Sure... FOR ONE MILLLLLLLION DOLLARS !! HAHAHA !!!
(Celebrity Dr. Evil impersonation)
I just took a piece of cardboard and bent it till it looked pretty close then transferred that to aluminum. It took some time but it was pretty easy. Mine requires no holes, uses the hood lamp holes plus I added two others. You could simply add rivnuts instead to have it just as secure through the factory holes. As for the contours on the sides, that is just a paint can radius blended into the width of the gauge clamp opening.
I'd make them but it isn't worth the money. Wanna pay $100 for one? (J/K) I make every bracket and gadget for my car I can.