Your car is posted on Bring A Trailer (
http://bringatrailer.com/2014/10/04/fast-road-tune-3404-speed-1966-plymouth-barracuda/) so yes you might get non- FABO members responding.
There is nothing wrong with bring a bit cautious so use your best judgement with contacting people.
You have a really cool car that has served you well and someone will get a really fun vintage car at a very affordable price.