I though i'd share with you my printed wheel arches curently on Shapeways. I've sold a few sets now, and people are really happy with them. There is also my brushless fitting kit, of which i have sold a lot now.
If you look under my 'creations' tab, you will also see my dashboard project that is near completion. I have two versions, one with metal detailing around the dials, one with plastic. The metal is more expensive, and a bit chunkier. The shapeways 'stainless steel' metal colour is not as chrome like as i'd hoped. I'm starting to think the plastic parts painted silver will be better - what do you think?
https://www.shapeways.com/designer/scorched_parts/creations