Click "USERCP" at the top.
Click "EDIT YOUR DETAILS" on the left (top option).
Scroll down to find "Car Year/Model: Is your Z a Twin-turbo or Non-turbo?"
Put the year of your car in that line. So... "1987 Non-Turbo"
Click the "SAVE CHANGES" button at the bottom.
That's it. Thanks.

The year of your car is still not in the "make/model" field. I thought the "warning" made that rather clear.

I received a warning that my profile isn't complete. However, I don't see that. Please advise. Thank you.

I'm sorry you felt the "warning" was a bit "putting off". In the future, I'll try to be more direct. You agreed to follow the rules of the forum when you signed on. May I suggest you familiarize yourself with those rules again. The warning was supposed to be a reminder that you failed to follow the rules. It's not really a big deal unless you want to make it a big deal.

And the year of your car is still not in the "make/model" field. I thought the "warning" made that rather clear.

I have received your "warning" and attempted to correct the deficiency. However, I posted my profile previously and I find receiving a "warning" a little off putting, in any case. Are you running a useful list for Z's or a prison?