Built this cross brace to help tie things together and didn't seem to give myself enough Clearance for the engine to rock back and forth. Right now the cross bar is welded flat to the bottom and I have about a quarter inch of gap between the trans diff area and the bar. My question is how much room should I allow myself for deflection between the trans and crossbar if I plan on running all poly mounts. Kind of a vague question but some input would help thanks guys