Exhaust???

[DaddyA]

Hi,

while we are all waiting for a certain somebodies test results, just thought I'd throw a question out there.

Does the exhaust have to be made from round tube???

I was thinking (probably shouldn't), to keep the side of the roadster clean looking and with a close proximity to the ground - could you not make the exhaust (main system) from rectangular tube?

Obviously the silencer would be an issue, but rear engine cars seem to manage. Repositioning of the fuel tank might have to done to get the silencer where the fuel tank would normally be.

Twin exhausts out the back - whats your thoughts??