thats what im trying to figure out,but you could try replacing the model files from one directory to another leaving the abe model an backup,ill try that
EDIT: I DID IT! replaced a abe model with a slig model XD but the prob is you use the sligs abilities and powers.... mabe ill make a new character as a help like a slig follower
edit:i found a sound grow! that i didnt find in game...