Thats half the battle isn't it? Do they heat treat the lobes and grind the points lobe on the cam?
Just so you know the one pictured is one from midwest supercub. If you use these then you have to modify your block on the points end and have to buy a points bracket to fit on the PTO end of the block.
One of many reasons I use Vogel's cams, cams made for stock stroke motors fit right in with no block modifications.