If you really want the summon models, you should figure out how to rip 'em on your own or find a way to contact mike strife and and have him send you the files, but you won't get 'em here.
If we take stuff from other games, that's not technically modding, that's stealing content.
If we make our own models though, that's fine (according to the forum rules, at least).
If you think that sucks, then you should look around and see what we've done thus far.