[Rickd]

I'm not sure about "sustained periods of 140 - 160" - that seems to be a little over the top for the 60's technology and aerodynamics of the cobras. There are normally a few ERA's on the used market and, generally speaking, these are cars that will have extremely low mileage. There are people who buy / build / collect these cars and drive them to car shows only. Others might put on 1,000 miles or less in a year. I once was speaking with a gent who had a 6 year old 289FIA car for sale, with only 500 miles on it - and then he decided to keep the car as a stable mate for a GT40 he was having built. I have seen a few ERA 427's for sale - and that in my opinion would be a very viable direction to go in.