Glad to see you stop thinking about the g-max and similar setups. To properly install one is tricky, as you have to slice your uni-bodies frame rails in half, cut up your floor pans to clear, as they are the "guide" for positioning the body over the frame. In doing so if the body isn't properly braced you stand a very good chance of permanently damaging the body. As far as stiffening the current car it never ceased to amaze me the difference a good set of sub-frame connectors will make, yeah you can feel it. Especially the triangulated type. There are many products for the front of our cars, to really tie it together, a 6 or 8 point roll bar does wonders for getting the last bit of flex out. Lastly, you could try the new flaming river power steering box, its a fast ratio and is half the factory box size, bit as with any thing "bolt on" you may have to put some effort into making it fit.