The rear of vehicle is low I have busted my gas tank when I passed over a piece of metal that was only 4 inches high on the roadway I have scraped the Transmission pan making a leak twice I have changed springs shocks but Car is still too low what is the solution

Do you carry a lot of weight in the trunk? Tires stock size or taller? Have a suspension shop check the ride height.

No I do not but carried some time in the pass can that previous over load have caused the problem

If you have the correct springs and struts then the car should be at the stock ride height. Installing taller tires might gain you a 1/2" of ground clearance.

I am uncertain of what was used not sure if struts or shocks I felt all was the same I mostly bought shocks iwith attached spring there were no other parts as far as I know coil spring I bought on line from Auto Parts warehouse as a recommended for the car on line