need / 6 id help also

The T that follows the first letter specifies Truck (obviously).. But there were a few years that the T was first . Chrysler changed how the stamped blocks a few times and at times had extra stamps depending on the plant. I'm not sure what year they began stamping serial numbers under #6.. My guess would be 68 when they changed the block to 5 freeze plugs. And at some point they started the 10,000 calendar.

They reused some letters a few times.. this is probably where the 10k calendar comes in to help figure out later blocks

60-65
First run :
P - 1960 pass
TP - 1960 truck
R - 1961 pass
TR 1961-1962 truck
S - 1962 pass
T - 1963 pass
TT - 1963 truck
V - 1964 pass
VT - 1964 truck



The second run : (Add T for truck)
A - 1965
B - 1966
C - 1967
D - 1968
E - 1969
F - 1970
G - 1971
H - 1972
J - 1973
K - 1974
L - 1975
M - 1976
P - 1977
R - 1978
S - 1979