so you want gender bender yaoi?:
http://www.mangago.me/read-manga/nise_x_koi_boyfriend/
http://www.mangago.me/read-manga/harem_de_hitori/ (hoshino lily has a bunch gender bender types)
http://www.mangago.me/read-manga/wagamama_na_jewel/ (ch2 i believe)
http://www.mangago.me/read-manga/udagawachou_de_mattete_yo/
http://www.mangago.me/read-manga/extrastrous/
http://www.mangago.me/read-manga/kawaisa_amatte_nanika_ga_hyakubai/ (last chapter)
also naughtysensei has a genderbender list if you want to check it out:
http://www.mangago.me/home/mangalist/28472/
male gender bender were the girly guy ends up with the guy anyone?