DMT makes a seal kit for that area. My 73 used two different types of Philips head screws. Basically, you want to use a screw that doesn't have a large "dome" on top. Try to get some that are fairly flat. The screws that held the drip rail trim in place were zinc plated. The ones that attached the weatherstrip channel were chrome plated.
The drip rail trim goes on first. There is a seal that goes between the car body and the drip rail trim. Then, the weatherstrip channel is attached. There is another foam seal that goes between the dip rail trim and the weatherstrip channel. I had a hard time getting the drip rail trim over the lip with the vinyl wrapped around. I ended up trimming off the vinyl right at the peak of the lip.
As far as the main side glass weatherstrip is concerned, the new stuff wouldn't stay attached to the weatherstrip channel like the original one. I had to put some weatherstrip adhesive in the channel to hold it in. I don't remember whose weatherstripping I bought.
The wider foam seal on the left is what was between the car body and the drip rail trim. The piece on the right is the weatherstrip channel. It takes a thinner foam seal.
