Thanks guys for the input. The four bars are mounted where you see them. We were going to mount them through the frame but decided to weld them in place after we started checking all the angles. The mounts are 1 1/4" solid stock that we drilled and tapped. When we have mounted everything up we will be taking the frame out and welding all the bracing in place. We will flip it over so we don't have to do any over head welding which is a pain. We will be adding gussets out to the mounts so there shouldn't be any problems.
Thanks again, Keith
P.S. I appreciate the input now. It's much easier to change something at this point rather than after everything is all together.