93s i think are shorter on purpose, theyre supposed to fit around the ankle, big boys are supposed to be longer. I have a medium and a large in the big boys and the large has a 34" inseam and the medium has a 32". I had 3 pairs of 93s but got rid of them all cause of how short they were and switched to big boys and they fit much nicer. Surf pants fit closer to the big boys length wise as well. basically if you want the 93s just size up on the inseam, if i had done that they would have fit just fine