I ordered everything to rebuild a SM-420 from "S.K. Performance Transmissins, 9900 Glenoaks Blvd.,#1,Sun Valley, CA 91352. Phone Number: 818-768-7606. I delt with a man named "Steven Kolar." Very nice people and they worked real good with me. Note I'm in Mississippi. Hope this will help. I'd say it can be rebuilt, money wise, for a couple hundred bucks. Mine was.
