69 camaro tmi sport molded door panel questions

[killertiller]

I just got my headliner now im debating the sport molded door panels. My concerns are..... fit ? when door shuts is there any issues? how does it connect to door? I don't see how the stock gm arm rest screws attach? how do they attach besides the push clips? how sturdy are they when u pull on them to shut door? and I see the little pocket where ya grab the door panel looks unfinished in pics, like there should be a plastic insert or something. Cant find any real info after searching internet for days