Why Not Don?
if you're going to get a rebuilt, don moyer is probably the best bet. nobody knows the a-4 better and nobody has rebuilt more of them then he has. other than him, why not just pull it out and take it to a good mechanic for a rebuild? he's going to have to go to moyer for parts, though. the only other alternative would be to contact the guys at indigo (
http://www.atomic4.com/) and ask if they know anyone.