Its been about 2 years since I pulled the car apart for major restoration work. I am now trying to put the AC/Heater Boxes back in. In the picture you will see a short one and a long one. I have 6 or 7 of the short screws and only one of the longer screw. I seem to remember that the long one went in from the inside of the car through the heater box flange and into the AC box flange or the press nut in the firewall but not sure. Can anybody tell me which hole hole that one goes into.???. Thanks...

 

Oops, forgot to post the picture so here it is..