Left inner fender tag

Trying to get some info on my 67 Dart GT. I need to find out where to get the information to deciper the tag that sits in the left wheel well. I have been able to find out what each section is, ie: axle, engine etc. But I don't know how to deciper the codes.

Axle is: "2"

Trim is: "P6R"

Paint is: QQ1

Upper inner door color is : "Q"

Engine is: "31"

The top lower case letters have "4" under the b, a "7" under the h, and a "4" under the j

The second row from the top upper case letters have "1" under the R, "1" under the S, and "2" under the X

Can anyone deciper these or tell me where I can find this information?

Thanks

Brian Gordon