originally was going to go with something like this bolted to the chassis but without access to an oxy or plasma they where a bit difficult.
Mind the flaky shit from the gal and gassless but that's the general jist of it, I made up the bar cut the brackets for the mounts and tacked them together to drill them , welded to the bar bolted other mount to it jacked the bar up to where I wanted it welded to pipe inside the cross member, holes where already aligned bolts just slip straight in with ease. If I where to make another bar I would use I or h beam for the mount on the bar and cut off one section instead of welding two bits of flat together like in the second pic.