What year is my 350 Turbo Trans

[custodian]

I bought a 350 turbo trans for my LS Swap. I'm looking for a new detent cable and can't find one that mounts the same inside the trans. The only numbers it has on it is 12K528025. I did an Internet search on that number but could not find anything. I'll attach a picture of how the detent cable hooks up.

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[NickTransmissions]

Any standard/stock replacement detent cable will work. It hooks into the detent valve lever that is shown in your picture.

If you have a non lock up TH350, your unit ranges from 69-79. If you have a TH350C, years were 78-84.