440 problems (take 2)... More known values

Before I pull the trigger, is there a 3-bolt version of this cam?

IDK if this cam is available in three bolt but if it were me I'd opt for a more modern cam. I'm not saying its the wrong cam or that it would not work well. What I am saying is from what I read about it its a replica of a cam that was designed decades ago. Cam technology has come a very long way since then.