[freebeard]

My experience confirms the conclusion.

Stock 1600 dual port with the kool tin. 009, extractor and dual Solexes. It also had an oil temp sensor that lived in the dipstick hole so it could read the sump temperature.

I've still got that extractor exhaust. I think it's going to go on the weekly driver. A new stock muffler, tips, clamps and gaskets is about $150. A ceramic coated or stainless steel version of the stock muffler is $250. Compared to 'in hand'. It will probably sound a little ratty, but not as bad as the car does now.

My recollection is that the price of an extractor exhaust stayed at $49 for something like 25 years. It had some anti-inflationary affect that was noticeable.