Kirkham undercar exhaust pictures

[ERA Chas]

Very nice use of merge collectors.

[DanEC]

They are nice looking headers. Those look a lot like the Spintech mufflers I'm using on my ERA. Are they marked with a manufacturer?

It's a shame they couldn't get 2-1/2 inch pipes in over the suspension. A 2 inch tailpipe is fairly restrictive. If the mufflers are 2-1/4 or 2-1/2 before they neck down - that will help a little.

[twin turbo]

Have you considered using oval tubing such as this to clear your suspension Dr. Gas Exhaust - Oval Tubing, Oval Bends, Round to Oval Transitions

[KM480]

Would there be room to exit the exhaust right ahead of the rear wheels as in GT350 fashion?
The use of oval pipe there would look really clean too.
Just a thought.