Brian it may be different depending on your particular warehouse location. I ordered some AM400 once and it took a long time. I was told it had to come from a different warehouse as the one where the dealers feed normally comes from did not stock that feed.
True or not? Don't have a clue. But I do know if I want anything other than AM500-600 or MVP, way better off from a timing standpoint to just order the equivalent in Optimal.
