Rip I’m not sure yet. The cam, heads, etc. that are currently on the 440 in the silver car have only got around 20k miles on them and I’m definitely using those heads. The guy I got this ‘68 440 from said he was really surprised by the power that it made so it might be worth seeing if I can determine wether it’s still the original cam or if it was replaced with the timing set. Maybe I will throw a head back on and check the lift a couple of valves and compare them to the current lift of the cam in the silver car. If I have doubts about either of them I will just buy a new Lunati, the same one that the Director has.