I'm not sure how many 'red' colors existed in 1989, but mine is 63D on my Red 1989.
It was a biiiaattcchh to track down at the local auto parts store in the PPG book because it didn't show up under cars for 1989. I was going to touch up some rust. Don't even remember where I found it but it crossed to PPG # 4217
One Pint was $56.99
I never did it though since shortly after I hit a deer and now the whole car needs paint.