Adam,
Your paint information should be on the inside of a kitchen cabinet door, but I believe that the paint manufacturer was R&M Diamont. However, as Stan said, most good automotive paint retailers and body shops today have scanners that can match your paint color with the make of paint that they sale. This is important because the federal government has forced many changes on paint manufacturers in the last 22 years, and your original paint formulation is probably not made today. Also there is 22 years of sun fading to consider.
Gerald