Blue circuit Board in Coupe GT needed

[Michael Williams <daserde@ucla.edu>]

ok all i need some help, i need this part, i dont have the part number, 
but it is the circuit board that is on the back of the instrument cluster 
in a coupe gt, i am assuming that it is the same one that was in the 
other 4000's...by the way it is an 85...mine is completely non funtional. 
 If you guys can help by pointing me to a place that has the part used or 
new at a good pr9ice, i will be forever grateful.

Mike
85 Coupe Gt