I am now going through my 30 year old stash of H-body parts and am locating a lot of NOS stuff in GM boxes. Is there a reference within the internet to show if the parts and boxes are numbered correctly within that box in conjunction with the right year of car? I have found decals for the Nighthawk, Skyhawk front emblems, center cap for the aluminum wheel, etc and I know that I have Monza stuff in other boxes that I have not reached yet.
Can someone advise me about how to double check the part number on the part and box to determine the year? Is there an internet site with that info?