I used Dupont Cromabase with SPI clear on my Cuda. I was very happy with the color match and results. I am sure PPG would proved good color match and coverage as well. When I did my Duster I used Nason acrylic urethane and was also very pleased with the results. For base I would stick to the higher quality paints but I do like the Nason for single stage paint. You do want to make sure you use the right code for the year you have as B5 changed in 71 and again in 74.