Chassis Stiffening

I think my GV weighs in at 23 lbs,the factory S buckets are heavy,no console, Optima in trunk, Front skid-plate, al tailhouse,al heads,AG, A/C 26"rad,A ton of sound-deadener, P/S, P/B. Oh wait, I took the skid-plate off for racing. I cracked the Milodon pan in my first GRASS autocross. I couldnt believe how much fun that was. The last jump I hit, came down and buried the pan in the SOD. Man thats a sudden stop. So the plate went on, no more worries.