Suspension for 94 gp se

[94grandprixse]

I have a '94 gp se and the rear suspension is shot. I need an aftermarket suspension, adjustable preferred. Hydraulics are an option but I wanted to know if there are any other possibilities? Air shocks/struts? Needs to be able to withstand a 1500 lb load. I don't even know what the factory suspension is. I had one guy tell me it's struts and another told me it's a leaf/coil spring assembly. Any help is greatly appreciated.

[kilroypr]

On the back you have leaf and is really weak(It would not carry 1500 punds)

[94grandprixse]

Thanks for the reply. Any idea on what I could replace it with that will support that load?