Hehe! Dude I own an 87 astro as well. I am souping it up when I get more money. Anwyay, that door idea would be way cool man! I say go for it. Are you talkin opening up as in hinges on top? OR Opening out to the left? You should think about opening up. I think if you had it open left, you'd have to have some friggin strong hinges that might come out of whack often because of the looong door