We too found that panel shops mostly only want to do minor rust, and really only want to do modern cars which you buy panels and bolt them on, they will however paint our vans once they are hard coat undercoated and blocked etc.....we had a friend who is a brilliant panel beater, but that isn't his trade...good luck finding someone who will do work for you...if you wanted to go west, I have heard of somebody in Cowra who may do old school panel beating, but haven't used them nor know anyone who has, I just read an advert. in a local newsapaper suppliment.
cheers Jennie