chevy 230 inline 6 ID

[67mater]

I have done enough web searching to find conflicting info on ID'ing this inline six, so can someone straighten me out?

the block casting number is 3921967, which seems to be a 64-69 230 (not a 250). The casting date of CON2 H237 being August 23rd 1967. then the confusing part is the suffix code of F0824TA. 0824 confirms the august date, but the TA I can only find as a 1965 230 (or a 1966 250).

So, is this a 1967 van 230? I saw one reference that might suggest the vans in 67 came with 230s, but the ONLY place I can find reference to TA as the suffix on a 230 is for 1965. Or is it possible that 3921967 is possibility a 250? This came out of a stupid original 1968 C10, but that only confuses the issue, so I am not certain if the engine is original to the truck.

Please help!!