As I recall, a basic rebuilt flattie from H&H was in the $10K range, and one tricked out with a period blower & multiple carbs was over $15K which is indicative of the costs involved. Don't get me wrong, I love the look and sound, but ya' gotta' want one really bad to justify the costs. Plus finding a shop that even knows how to check one out for problems is probably going to be a chore. I you do decide to dive in, Speedway Motors has tons of flathead parts to help you along.