I am ready for a new headliner in my 68 coupe. Should I remove both windshield and back window? Both of the seals are cracked and shrunk up some from the hot desert sun baking on them for a few years, so I thought it would serve me well. Also, is Mustangs plus the place to order headliner and windshield seals?

 

The simple answer is yes. Take the car to a glass shop to have it done. The extra you pay is to NOT have leaks. Work with the shop in that you will buy the parts and they will install them. Let them have parts approval - up to a point,they can't get any better ones than you. Keep this in mind, it take at least two tube of weatherstrip adhesive per window to seal it, front and back. Ask how they intend to do the work and what type ofadhesive they use. 3M 08008 (it's black) is recomended.Any mail order store will have almost the same parts, there are not that many manufactureres, just a lot of retailers.
Jim