Which cam will work decently with stock magnum tune?

All I can tell you is this. If you think putting a "mild cam" in, in the place of your stock one is going to be the end all be all for a power change, you're wrong.

Have fun though. That's what it's all about.
Oh, I think it will do alot over the stock stick. When I stuck the smallest 114lsa cam in a customers 5.9 it really woke that sum ***** up, I tell you what. Night an day