I have a set of 440 source cnc heads I bought from a member here years ago. Times got tough and I sold them to the guy who bought my old 68 Chrysler 300 20+ years ago. Last year I bought the Chrysler 300 back from him and bought those same cnc source heads from the mechanic he sold a motor to that had them on it. So in the next month my old heads are going on my old car with a fresh 440 and the comp xe274 cam out of the motor the heads were on. Not a race car by any means but should move the old c body pretty well even with 3.23 gears. The car does have a nitrous system for extra giggles.
I look forward to finally using them after all of these years.