No, it willn't help. That mod (new army man) not for CJ, it's for army men. You should replace files "army" in gta3.img archive, you can play that model only in multiplayer game. And you can't replace CJ, because it made of a lot of models (head, legs, hands...) By the way, you can replace all people by files army.dff & .txd look at this: :lolbounce:
s56.radikal.ru/i154/1004/fa/a388cea488df.jpg