This is how I make my body-grip stands without the bends in the rod. Really simple if you have a welder.
I used 5/16" hot rolled steel for the stands in the picture. Hot rolled is cheaper than cold. I've since gone to using 3/8" rebar though. You can make them as long as you want, most of mine are 24" for beaver, but some are as long as 32" or as short as 18"( for rocky bottoms). The one on the right in the picture is for shallow water, the cross brace is 5/16" X 3/4" flat steel. The support tabs are the same. The flat steel is more expensive though, it's running about $1 per foot, so you may want to use other options for your tabs and cross members.
330 dimensions:
12" wide (inside to inside)
24" tall (length optional depending on your conditions)
Support tabs are 2" down from the top, 1 1/2" long
First cross member is 8" down from the top.
Be sure to grind/round off the sharp edges on the tops of the stand and the ends of the tabs. They will cut up a beaver or any animal if the animnal happens to jump or roll on top of the stand after being whacked.
You can make them for any bodygrip trap you want, 330's, 220's, 160's, even 110's. You just have to custom fit them to your size and brand of traps. I made some for 1216's too, with some add-ons to help stabilize the trap.