Probably...and probably in the near furture.
Things are so cheap, ive learned long ago that picky is the man who can't do the work himself. Not a knock on anyone, but these are what speedmaster aluminum is to reg eddy aluminum.
Nothing wrong with them at all, for magnum heads. Lol... I'm partial to LA shaft mount stuff. They also weigh less than a rhs, i have the rhs to know. Its all in the ends and lack of shaft bosses im guessing. Decide for yourselves of course.