I guess one could do it if one wanted to badly enough. The Gen II has radially mounted front brakes and the wheel is different, so essentially you would need a complete Gen II front end. The rear brake and swing arm are different and use a different wheel, so the entire rear end would need to be upgraded to Gen II as well. Would likely be better and more cost effective to just buy a gen II with ABS already on it. It would be a fun project though.