Anderson Silva could definetly be an average K1 fighter like win a few then lose a few. Apart from Silva, Gegard Mousasi(with a top standup trainer) and Melvin Manhoef could make some noise in K1.
Machida I would like to see fight just simply because I dont think I have seen him take any damage in UFC, even against Sokoudjou.
Without a doubt though I can definetly see Matt Hughes making the transition and he would probably win K1 MAX every year.
Franklin,Gouveia,Maia,Kharitonov,Hunt,Liddell,Pari syan,Hardy,Shlemenko,Machida,Gomi,Bustamante,Evans ,Edgar,Hathaway,Bonnar,Murray,S.Carter,Ludwig,Pett is,K.Gill,Sobral,Mousasi,D.Cruz,Arona,Nogueiras,Co te,Ole Laursen,Kawajiri,Sakuraba & K1 Lebanner!