Yep, our 2012 Charger R/T does that also - you pick up any corner of the car and the whole side comes up.If I jack up my roadrunner under one wheel, one wheel comes up, and I can't open the door. And It has factory torque boxes.
If I jack up my 62 under one wheel, that whole side goes up, the sedan door opens and closes, and it doesn't have torque boxes. (It does have homemade subframe connectors....... and an eight point bar tied to the floor and the subframe connectors). No broken spot welds though.......
I installed the mopar performance bolt on frame connectors. I figured it couldn't hurt. The car is not a fire breather, or will see a track. I figured it couldn't hurt.Absolutely agree that UTG is an idiot whose advice I would be very cautious in following anything he says.
Reference the stiffening issue, not sure where this stems from (other than UTG) but stiffening can only improve the vehicle assuming it is done correctly. For discussion sake, look at convertibles and performance cars from the era, attempts were made to stiffen them up somewhat to withstand twisting. It has been reported that in cars that did not have stiffening but had significant HP added in some cases cracked windshields, popped spot welds especially in the quarters and bent other aspects of the substructure. In other words, correct and properly installed SFCs, torque boxes and under fender supports greatly enhance the structural rigidity of a classic car. I install all of the above in all my builds.
Yes, look back at the 65 altered wheelbase factory cars, all hard tops and the were bending like crazy. Chrysler tried to get the racers NOT to do wheelstands. Eventually they became bent beyond repairI guess the "stiffer" cars were the 4 door, and two door sedans, only because of the b pillar.