I've gotten an america seat for my speedmaster and would like some clarification on what parts I need to mount it. It looks like I will need an America specific plate to replace the plate with stud used on the speedmaster as well as a specific bolt that the rear seat can slip over. Also my front seat came with a bracket from a Corbin which I'm guessing is shorter than the stock America seat bracket. Does this sound correct? If so could someone recommend an someplace online where I could order these parts?

Thanks,
Hugh