Parts supply house
I think Mike or any of the guys at PSC (Peformance Suspension Components) could be of help. I prefer dealing with them when buying suspension rebuild parts because they only sell the best US made parts (ie. Moog, TRW, etc.). The other suspension places (like PST: Performance Supension Technologies) sell a mix of US and Asian parts (whatever they grab out of the bin). PSC is out of Scottsdale, AZ.
BTW: Love the AMX!