Helping out a friend!
The numbers on the end of the torsion bars can be decoded. The factory made 5 different bars for A-bodies. For a '70, there were only 3. 888/889 are the weakest, 890/891 are next stiffest and 892/893 are the stiffest. If they're not any of these numbers, post the ones it has and we'll find out what they've installed. If the slant 6 is in the car and it has a V8 K-member, it must have some sort of modified mounts now.