I am installing an original '65 under dash A/C evaporator. I need to drill a hole in the floor pan for the evaporator drain tube. I'm not sure where it goes through the floor. I'm looking for a few photos to help me out.

Many Thanks!

 

Here's a 66. Be careful, it may not be the same as 64-65. You may find a dimple in that location, but it's usually so indistinct you already have to know where.

 

Thanks for posting the photo. After performing a number of web searches, I came across potential measurements for 65-66. The author gave the the following reference measurements:

4.5" right of the center line of the trans tunnel and 15/16" forward of the seam at the floor to firewall pans. Drill a 1" hole

I also read that there may be a template in the electrical assembly manual.