just got off phone with manson reamers. ordered the 11 deg forcing cone,T handle etc. couldn't of been nicer to deal with!i am so tired of brownells having 90% of what i want being on BO i now go to the source or a distributor. not to mention their rude staff. they act like they cant wait to get you off the phone fast enough. nothing at all like when i used em in the 70s and 80s.
in any case, mansons does have the reamers, i believe on page 19 of their online catalog. their tools are great but their site is a chore to navigate. call or email em. eventually you will get an answer.