We are working on a 69 it just came in. He's right there are very few things not made for a 1st gen Camaro.
Here's a Link
to a great forum that specializes in 1st gens, they can answer any question you got plus a few you haven't thought of.
Your window problem is most likely due to misalignment in the tracks.
Good luck, and remember to ask lots of questions and don't forget above all else have fun.