Looks to me like your hood hinge is binding,if nobody has tried adjusting it,youmight get away with just oiling all the pivot points and working it in. I can see from your pictures that somebody has already tried to do something with that back window, now you can do it right. Yeah like hot rod paint has already said,the glass has to come out. Odds are you'll have to patch,but like Dave says that's not rocket science either. Try just a rust converter, I've used POR15, it's hard to sand,and I couldn't get paint to adhere. Might be just me though. The window trim is held in with clips attached to studs, you'll probably have several missing when you go to put things back,I put the clips back on with pop-rivets dipped in rtv to seal the hole. Good luck. Hank