[76GoldGP]

Thanks for the information. It's amazing you actually built these cars.

I used the 1975 service manual and the 1976 service manual supplement as indicated (there was no complete service manual for 76, as far as I know). Neither of them included the engine code "P". Then I checked the 73 service manual just to see if there was an option that may have been omitted in the 75 and the 76 manuals.

[76GoldGP]

It is interesting that the 76 service manual has a typo as it specifies the J57 as an SJ Grand Prix hardtop coupe, and the K57 as a Grand prix hardtop coupe, while your VIN built sheet specifies the opposite: K57 = Grand Prix SJ, J57 = Grand prix.

Seeing the VIN Build sheet explains everything. Thanks again.

[Keith Seymore]

You are welcome; technically I didn't start until 1979 but in a lot of areas there hasn't been much change since then.

I'm not surprised to find errors and omissions in the service documents. All of this paperwork was done manually, by human beings, so there are lots of opportunities for errors. Additionally the service guys were kind of "second banana" while the focus was on making sure the production paperwork and processes were correct.

K