Hey Clay,
You are correct, and I agree. However, my ERA car/fuel tank hangs low (beneath the trunk), so to do this the tri-bar support rod setup would have to be pretty low and angled like a hook around the tank. The rear mounting fixture would be sort of obscure hanging down. I may still do this as well as an addition to the absorber project. Cobras always need something somewhere and I seem to be a glutton for punisment and drawn to it.
