This is my first refurb/restore since the 80s. I'm doing all that I can in this project, and have found the Duplicolor products to be excellent, and the videos very helpful. This IROC-Z is a factory 5.7L. The motor and transmission were modified by previous owners. Duplicolor products are being used to bring many parts back to life/color and giving some parts new color for accent, such as the calipers, and the stock rims.