Zulg did this like...five years ago. I couldn't find the original (broken) attempt, but here's Daevryn's working fix from like...four years ago.http://forums.carrionfields.com/dc/dcboard.php?az=show_mesg&forum=47&topic_id=91&mesg_id=91&listing_type=searchIIRC, your gains are based on like...(Current Con + racial max)/2 or something like that.