True. It got darker in 73 didn't it?
Not to mention there were minor variances batch to batch. They probably didn't watch this color as much as the body colors.
I recall people mixing some of Southern Polyurethans Inc (SPI) epoxy red with their black and getting good results. Can't beat the price over PPG which I think is what lot of people use to match the old color. Around $180 for gallon of base and gallon of accelerator delivered to your door. Great product, great support to, you call and I think you end up talking to the presidnet. Many people on here have used SPI products with great results.