Torque boxes needed?

hymmm, I jacked my car up on leveled jack stands , when installing subframe conn. and 6 point roll cage , ????and forward fire wall supports , when I got it back on the ground the doors worked perfectly , no diff. than before ....
Glad it worked for you, not all cars are that rigid from the get go. Out of curiosity, were the jack stands under the suspension or on the structure?