Stock magnum bottom end with tricj flow heads what cam?

Unfortunately, or fortunately, depending on your perspective, the Trick Flows use LA valve gear only. The rocker is the key to the head working on a Magnum block, just like any other Magnum/LA head conversion. Geometry is much less of a hassle with the Trick Flow head though, especially with certain rockers.
And those certain rockers would be ......?????