10066475 this is the one I used on my 700r4, I retro fitted into my 77 k20. This is for a 1991 Caprice. Best option in my opinion. I had tried the aftermarket "adjustable" ones 2 they both fit horribly and the stop nut ruins the cable.
The AC delco has @ 10k mile and 2 years with no issues.
I found mine at rockauto