Alot of people have that problem. It just happens with the good ole' fox bodies. After I lowered my car it got a little better but there's still a noticeable lean to it. Some people have had success with battery relocation to the passenger rear. Before you even think about that make sure all your suspension components are functioning properly and in place (shocks/struts/springs/isolators...etc.) Search the threads too, I seem to remember some people installing a particular bushing kit made specifically to remedy the sag, but don't quote me on that.