I hope the possibilities have not been 'exhausted'. I intend to fit headers and dual 2.5" exhaust producing a classic V8 burble to my 67 convertible. I have a good exhaust man who knows how to produce an unrestrictive exhaust with a good sound. It is important to find someone who is an expert not just a pipe fitter. Although I can recommend Parramatta Exhaust Centre it is probably a bit far to come to Sydney Australia for an exhaust! I will also fit bolt on wire wheels with spinners-see
www.wirewheels.com.au. My intent is for my Imperial to be 'restified' to better than new with enhancements to make it an even better road car, and ensure it can blow any silly little rice burner into the weeds.