jim larson

Wondering about the R coded drum rim from 65-68 on the 442. Were there 3 manufactures, Norris Technologies, Kelsey Hayes, and Motor Wheel Corp?

If so, was the center section and outer rim design different between different manufactures? Thinking that NT and Kelsey Hayes use the same design for both the center section and outer rim design except for different stampings. And that Motor Wheel used a slightly different center section design and also a different outer rim design.

What about the same rim for the GTO, Chevelle SS, and Buick? Thinking that they used the same rim except for the Code. GTO and Chevelle SS sharing the same code, unsure about the Buick code.