Easy (?) OD Auto Install
Are there any numbers after that? Should be two sets of four numbers. The first four indicate the day it was built, according to the 10,000 day calendar Chrysler used. The second set of four indicates the sequential serial number.
For example:
3028 = Build date = November 11, 1969
6361 = Sequential serial number = 6,361st transmission built that day
For reference, July 29th, 1961 is day one of the 10,000 day calendar. To figure out the build date of your transmission, go here and enter the number
Chrysler's 10,000-Day Calendar