They are sort of nascar type of exhaust, A flat oval coming out right in front of the rear wheel. I would think they would provide good ground clearance.
I'll post a video and mfr link.
http://www.youtube.com/watch?v=7WG9lzzaaTE
http://drgas.mybisi.com/product/boom-tube-exhaust-tip.
I would like to see them in stainless or chrome.
And I would be concerned about having enough room after headers and before the side outs.