Hi Jim, Yes I get what your saying, the shocks are Toyota Soarer Air bags and don't have springs at all. they have a chamber at the top that acts like a reservoir of air, and a very complicated system of moving air from a reserve tank via solenoids to each of the struts as required, the system is very sophisticated for 1991 and it moves the air around depending whether you are braking, turning or accelerating, it even moves it from side to side of the car if you swerve to change lanes rapidly, to reduce body roll, as well as moving the air to the rear to prevent rear squat. The system also raises the car on gravel or rough roads. and lowers the car the faster you go.
As far as changing the mounts on the bottom I don't think getting a face full of molten metal as the gas escapes is a good choice either. The brackets are about 3mm thick so the best idea I have come up with is to find another bracket off another similar type of shock, and weld the eye from another shock onto the 3mm remains of the original bracket without heating up the bottom of the shock to much, so you don't break through the bottom to the gas charge. Guess I will just have to be very careful but I think it might be doable
Lambo