Brother, that is not rusted out, nor is the rusted out hole that is shown worthy of concern-in two & half days with the cure time, that would be fixed for minimal dollars. If you already had a welder, & a grinder-you would just need the Ospho ($20 gallon), 2K DTM epoxy primer (a pint's worth) and sand paper, (maybe some bondo to smooth out a nickel's thickness of imperfection-but doubt it).
