Great customer service first of all, from now on I will be buying everything I can from here. shipping was fast, packaged well. Install went very smooth, I was worried because this part does not say it will fit a fastback mustang, but instead coupe/convertible. But it has plenty to make it around the trunk. The rubber is so soft, it sticks very well and immediately. I wiped the seal and deck lid with rubbing alcohol, let it dry, applied a thin line of 3m 08008(
link) to both, spread out the lines to about ½ inch wide, let it tack up for a minute, then applied another thin line to the seal, spread it out and immediately put it in place. Zero movement of seal once placed down, and zero glue oozed out, looks perfect.