Dangerous and violent chassis flex problem!!!

[triggerthetruck]

Help wanted please...I have a really serious chassis flex problem that has been becoming evident over the last year or two. Hit a bump or a hole and suddenly the whole front end will shake very violently. I have just replaced springs and shocks to the front of my 87 K10...but the problem persists. I imagine something like...boxing the chassis, welding the rivetted cross members, or putting in new cross members. Before I get in to that I would appreciate any advice you may have...Thanks, Andrew