This is how the parts used to look like taken off the engine. The factory finish on the Valve covers have peeled over time, possibly due to heat and wear. the Intake Manifolds also faced discoloration. Other parts in the picture includes the fuel rail plastic cover which will also be painted.
Grinding excess cast material for a rounder, smoother finish
See the difference between a sandblasted valve cover and one prior
Sandblasted Intake manifolds and without
All sandblasted. looking really prepped for a good coat of powder before baking
This are the silver powdercoated Valve covers