parts pricing for a AT-6 and a BT-13

I am helping a friend who is an insurance adjuster.
We are trying to find replacement cost for some parts for a North American AT-6 and a Vultee BT-13 airplane.
We have some misc. parts to find pricing on. Any one have any info on vendors for these parts.
Thanks for the Help.

Rich

This company is the best known AT-6 parts supplier remaining. There are certainly individuals that hold some misc. parts but most are hidden from us.

http://www.lanceaircraftsupply.com/