Sundance said:fostang, you either need to triangulate or put a panel in your radiator support to give it some shear strength. Welding up the seams stiffens the chassis. It's a old rally car trick. It really helps alot more then you would think.
I like to put a little humor into my response. Yes I did weld them.
I'm still not done with the front. Once I have picked the radiator I will add the side panels. Then where the battery once was I need to calculate an opening for the airfilter.