My son and I have just recently started another build for his collection. The Mercedes-Benz SLS AMG.
We've only put a couple hours in it over a couple evenings, but so far he has been helpful gathering misc. parts and pieces and gluing some initial components together to ready for initial painting. He asked if I'd paint the bulk of the chassis satin black today (I took it to work to do it with the airbrush, rather than him brushing a large piece like that) so then I could help him do some of the detail painting on it soon. He's got the engine, and driveline painted "aluminum" I'll go back later and detail parts of it (it's mostly hidden honestly)
I spent some time this evening getting the top engine cover / air boxes painted, detailed and decaled.
The attached "full scale" picture is the look he's going for. Not a 100% recreation though, he's got a few minor devations he'd prefer on the model. Matte black exterior is a for sure though