There are different schools of thought. There is factory correct. And there is what you like correct. Just because it isnt factory doesn't mean squat to me. I like detail and quality work. In this case the pictures appear it's a really nice car. If it was mine? I'd paint the side scoops and spoiler body color. I kind of like the spolier. It would get the valve covers painted engine color. The radiator painted black. And lose the auto parts store battery holdown. Thankfully it doesn't have 20" wheels. We have a saying. I don't build by commitee.
Doug