Originally Posted By Alaskan_TA
Yes on the casting number.

Letters may be J, O, U or Z.


A E I O U and sometimes Y wave

56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d