My uncle was showing me how to pinstripe and he pulls out this can of paint he said was almost 50 years old. Lead based paint that is. He's been using this gallon can of black pinstriping paint since he started. He poked a hole in the dried up paint under the lid, stuck his finger over it and shook the can, poured out some black and went to showing me how the pros pinstripe! I learned a LOT that day.
Your car looks great. I love taking simple kits like this and making them over.