Am always buying muscle era - early 80's wheels, ended up going through a large stack of wheels and tires out of an older fellows attic, last week. Most were stock to 70's AMC products...lotta fun to decode
On the wheels you have mentioned, if they are Pontiac rally II's what is the two letter code stamped on the outside to right of the valvestem? With inner (spine) date codes like what you posted, if they're 15x7 rally II's, most likely the wheels are HW odes 15x7's from a base '79 or '80 TransAm. Will also fit A bodys with 4 3/4 bolt pattern wheels.
If the wheels are standard steel wheels, feel free and ck for the external 2 letter ID code by the valvestem, and if you can, ck whether 4 3/4" bolt pattern, or 5 on 5. If they are factory stamped steel sort or rally wheels from the mid 60's-80's, I can usually ID by looking at a few good pictures.