Have a brand new in the box 40mm gate, comes with everything needed to mount and has gate plate with it. Has new gaskets. Its a t4 flange. Will take 450$ shipped to you. Dont need it going different route. Price is obo.
That price isn't terrible considering it comes with the gate plate and the boost tee. I bought a 50mm Turbosmart gate back in December. The gate, gate plate, and regulator (from Home Depot) cost me just over $600.