I found my other camaro wheel this morning and I was woundring if you guys can decode it?
K18 7 2 4 D C
GM J K1 8
15x6 JK 7 B

DC wheels are 15 x 6 wheels for a 67 Corvette.

K= Kelsey Hayes
1=Romulus Mi.
8=1968
7=July
2=day 2
DC=Wheel Code,
Your wheel was produced July 2 1968 making it a passenger car wheel, 68 Corvette used a 15x7 wheel.
This wheel was used in the 1967 model year for Corvette and Passenger Station Wagon with disc brakes. In 1968 it was used on the Passenger car and was continued in production in the 69 model year until 7/69 for the Passenger car, when it was superceded by the YS Rally wheel.

Heres the numbers on my wheels that i got on my 69 camaro.
Right Front-K 1 G-GM
Right Rear -N 13 GM1-3
Left Front-11 GM K 1 9
Left Rear-M (with a circle around it) E k 1 9
This is the only info I can get because theres tires on it.