Installing Headliner 1966 Coupe

I am doing the same thing on my 67. I discovered to my dismay that the front and rear windows must be removed. Here it tells you how to do it

http://www.mustangandfords.com/howto/15758/

whatever you do, watch the glass guys! I had 2 different ones tell me they were experts at re-installing the glass with the headliner for classics, and they BOTH screwed them up!

if the rubber is good, you can tuck it into the weatherstrip, hook it into the hoops first, and mark them as you remove them, they are different! use a lot of heat and take your time....personally, I have done it many times, yet my least favorite headliner is the 65-68 coupe