Have it fabbed at a local shop. 3/8" CRS pressed to 90 degrees and a gusset or two. will stiffen it up. This is an area you will want no deflection.

I would also consider adding and additional removable cross brace at the attachment point or some bars to a cross member further back.

Here are some center bars and incorporation of the trans mount that will stiffen it up substantially. Fairly easy to do.



Garbz