Exactly where should I place them under the car. I Have no floor pans at all. will be replacing torque boxes, firewall and cowl, also the drivers side frame rail under the floor pan. Do I set Jacks under the rockers? I was thinking on the front frame rail by the a arms. also under the rear frame rails. Didnt know If and where the third pair should go? Or if anyone has some better suggestions. Thanks :shee