Terry: You forgot to mention acid-dipping the body also. You'll need to take some weight out after adding all that extra weld! On a more serious note... The CDW27 platform is pretty rigid to begin with. Of course it can always be made better. Very best mod for rigidity is a full rollcage WELDED in. Next best is to start adding chassis reinforcing pieces, always welded in place. No. 1 is a rear STB, then a proper X style frame connector, and lastly a front STB. For maximum effectiveness, all frame stiffening pieces must be welded in place! Bolts and/or nuts loosen up and eventually tear out. I've "been there, done that"!