There was an article written on stang tv that included the cobra jet intake and boss 302r/cobra jet intake and exhaust camshafts. I believe it made 473 rwhp and 369 rwtq. Dyno sheet is in the article. Mike heintz and his sby made around 475 rwhp with the cobrajet intake and monoblade setup.
Sites such as mmr, lethal performance and fordracingbydonwoods carry them. Looks like mmr has the best price for both intake and exhaust camshafts. But there may be more out there.