Well after days of research and tons of google pages this is what I know. The boats were built in Miami Florida by Jim Breuil. He was president of Frontier Oil and at one time owned the Buffalo Bills. He was an offshore racing enthusiast and frequently competed in the Midnight Runs to the Bahamas and the famed Miami to Nassau races. A few I might mention he won but routinely finished in the top 3 in a 36 Enterprise!!! From the ads ive found and what few people remembered them they were heavy boat built to pound in rough seas. Originally they were powered with Chrysler engines. I still don't have a clue of how many were made but from my research they were built from 61 till 71 . I like that it is a rare boat but that doesn't help with specs! Thanks to all who have replied! Oh by the way they were frequently called Enterprises instead of Breuils