Hi everyone new to site I have a 67 convertible and the rear plastic window is cracked. I have a new plastic replacement window but will be getting the top redone in the future. Is there a simple way to replace it w/o having to completely remove the back part of the top? Could I use 3m weatherstripping sealant, cut out the old window and zipper in the new one? I'm just trying to patch the old until I have enough saved up to get a new top& window put in. Also are there any mustang/ classic car clubs in the Lehighton PA area? Want to make some new friends!!