The metal supports aren’t an available product, you would have to make them. (Eboosted did that with his build) I’ve been meaning to contact @akhlut about making some that would be compatible with all trucks, and perfect for switchblade owners, but haven’t had the time. If all you need is a centimeter though, you can do what I did here:
Basically I just used the alternative mounting holes in my trucks, and drilled a bit to make room for the other screws.