Contact one of the board vendors, those guys know their stuff and take good care of us. They pay a fee to be able to sell their good stuff here. Those fees help keep this place running so nicely. Ive purchased alot of stuff via board vendors and have been super happy with everything. PM a couple of em, Im sure they will get back to you pretty quickly. When I started tearing my panel down I couldnt believe all the hidden rust. Wes from Classic Heartbeat fixed me right up. When I told him what I was running into he knew everything I was going to need...even the stuff I hadnt found yet. Good luck.
Click this link and scroll down to where it says vendors.
http://67-72chevytrucks.com/vboard/showgroups.php