Yes they are collectable due to only 2,000 1984 buick grand nationals were built. Just leave it stock and find you a base regal to toy with. But since your 15 just leave it alone and enjoy it. If you have a t-top car please keep in mind those are rare. Out of the 2,000 made around 900 had t-tops or astro roof. Your one lucky kid to get one of those. You could find a 86' or 87' GN or T-Type to toy with later in life.