I ordered an upper and lower radiator mount from Breeze Automotive along with their radiator shroud. I centered the shroud on the aft side of the radiator and drilled three holes along the bottom edge. The bottom edge is only bolted to the aft flange of the radiator.
On the upper end, I drilled and riveted a stainless steel hinge to the forward flange. I then drilled a couple of holes all the way through both flanges of the radiator.
Using a couple of spacers, I clamped the front and back flanges together.