Incorrect, but thanks for playing,
:P :P
A fully welded set will be MUCH stronger than one that's stitch welded. You don't want FLEX. That's the entire reason you put the SFC's on in the first place. If you put a "good" full length set on, you remove almost all the flexing in the frame. THIS IS WHAT YOU WANT. You don't want the car to flex.
Those Kenny Brown SFC's are so thin, they have been known to BEND while on cars. They don't do much at all to strengthen the chassis, b/c they are so small and such thin material.
Regards,