What to build a crossmember out of.

[mcbadwish]

Im going to inboard my rear leaf springs and was wondering what you guys would use for crossmember material. I was thinking plate the frame on the inside of both the rails and weld 2 pieces of 2x4 box tube together standing up like this --> II and welding them to the plates.

 

[WHITE TRASH1]

I just welded ford ranger hangers to the inside of my frame. Been that way for almost 7 years now.