Wow, not sure if you can even buy that anymore. There's been a movement away from solvent based paints over the last 2-3 years, more and more companies & businesses are switching to waterborne paints.
Also a trend towards HVLP delivery (often mandated). But I did find this, so evidently Imron is still a viable product.
For over 25 years, Imron® has proven its staying power. Imron® polyurethane enamel is the top-of-the line finish for trucks, commercial vehicles, aircraft, boats, industrial applications and specialty vehicles that demand unsurpassed gloss, durability and chemical resistance. It’s no wonder asset owners and refinishers rely on it for peak performance over the long haul. To top it off, Imron® is available in a nearly limitless variety of colors.