HVAC help

[93blazehorse]

so we are coming into the winter months, and i have a small problem with my front defrost, i have the "brain box" digital setup, and for whatever reason im missing three pieces, the actuator arm (that goes on the defrost flap stud) and the arm assembly that has the spring (part that hooks up to the actuator) does anybody here know where i can get or buy one of those things? the boneyards around here are dry of any 88-95 gmt400s and id like to have a working defroster going into the winter. i dont know if this is the right place to post but i figured it might be worth a shot, oh and for what its worth i have a 93 blazer with 3 blower motor speeds.

 

[93blazehorse]

http://www.chevytalk.org/fusionbb/showtopic.php?tid/201058- first picture the linkage to the left is what i need in my truck.. i dont know if it helps, but i really do need to find those bits..