I work at Year One. One of our catalogs is for '58-'72 Impala...which covers my '62 Suburban. I just went to the catalog and looked up the key for a '58-'64 Impala and got one of those. Went to the local Feed & Seed, where they still have the old style key cutter (UNLIKE Home Depot, who can't exactly copy a key), and they cut the new one off of the old, well-worn key.
This is a good time to point out that a lot of things GM put on our trucks were also found on cars. While not as many places specialize in our trucks, you can find a good bit of stuff for the same vintage cars.
Brad
