Paul, if you can get a longer lower link under the body and keep it raised at the front. You may be able to stretch it out to 20" or so. Then for the upper use a watts link, giving you more control over for and aft. Another issue I see with unequal forward links is that they will move in different radius's. Which will cause the outer bearing carriers to rotate in relation to the chassis. Now if this happens, your camber rods rotate moving one downward and one up. Seems to me this will effect the toe angle. How much not sure!