Eddy;
I have the Comp 422 cam (500/510) and a set of Vortec heads. Due to an engine problem, everything is apart including the heads....... as I bought the 772 heads "complete" I assumed that aftermarket springs were used. When I pulled 'em apart, many of the inner dampners came out in pieces! Now, I seriously doubt that they were anything but stockers.
Bottom line: If ya buy a cam, BUY the whole damn kit! Do it once and do it right. <------- just an opinion.