I wished that Mark just would have taken care of the issue. It sounds good, runs like a scalded dog, but smokes like a chimney. Due to me being so proud, I got into the mode of "I will show them, I will rebuild it exactly how I think it should be done", and now am into $2500 in parts alone to stroke and rebuild it. But that is ok, just live and learn. He seemed like a nice guy, he just doesn't own up to problems, at least mine.
Take a look at my photo gallery. I uploaded my father-in-law's Nova. He will be putting the exhaust out to the back, and has already changed the gasser style air filter. Take care and good luck.