Mr.Marbles |
Depends on the creature. Most of the stuff in 3.5 modules have entries in the pf beastiaries at this point. If the CR is a little off, the advanced or young templates work wonders. Class levels usually just need some rework against the pf class rules and 1 additional feat. Or somewhere in the published books it was recommended to calculate 3.5 encounters as 1 CR lower and let it fly.