My 1963 T-Bird did not have the trunk weather seal installed but did have a brand new kit that was purchased by the previous owner.
I asked my buddy to come and help me install the trim. He’s done complete renovations on various types of cars and vans. It turned out I was a helper as he wanted to do the work himself.
I probably could have waited until later when the rainy weather returned but when I installed the higher power amplifier it also introduced a rattle when the bass line hit hard. I won’t be able to test and hear if the weather seal helped dampen the noise until the 3M sealant has completely cured a couple days from now. In any case the trunk is ready for wet weather.