71 and 72's are considered good years to collectors. Plus they are cool cars.
Check underneath for rust. Check the bumpers as well as you may need to restore them for a better look. Make sure the ragtop motor works smoothly. Another post here had a problem with one. You can find parts suppliers on the internet. One place is Brothers Automotive Products. They claim to be
America's Leading Cutlass/442 Supplier. Here is the link.
http://www.oldsparts.com/
Good Luck
Passed life: 69, 72 Cutlass Supreme S, 70, 79 Delta 88
Current luck: 85 Cutlass Supreme Brougham