Engine codes for 402 engines in 1972?

[RPOZ11]

Hi all! Just purchased a complete 1972 Cheyenne-30 Super Longhorn with a 402. This thing is very complete including the Cruise Control, Heat stove pipe and manifold heat shiled for the stove pipe!! I have a question regarding the Factory GM Block stampings for 1972. Here is what my Block shows: T1I09TKX. Is this the correct Block? I have yet to pull the valve covers to check the head #'s, the carb shows 7042206, and even still has the Harrison radiator too! Havent even had it 24 hours and Im looking to see what this thing might be worth....Any and All suggestions, info and the like will be greatly appreciated! Oh, and by the way, I bought this truck from the original owner: NHRA's John Force's Brother of all people!!!