318 block/340 heads?

He looked at the lifter and said it was cupped,dished, bad and that the cam lobe is probably bad. He suggests pulling cam. Either way I don't like not knowing what cam is in it. any thoughts. should I pull heads while im there and have them checked, decked?
I feel slightly violated.:axe: Just got a text from previous owner he changed the lifter's out about 3 months ago!