Thanks! Hey, two extra cylinders really make a huge difference.
As we're already at it: what about the engine colors? Pistons in brown and yellow, cylinder head in blue or everything in gray? I think yellow has some appeal with the remaining orange/black coloring of the car, but gray engine parts aren't bad either. I should maybe build a second one for better judgment.
BTW, gray also looks good on the rims, but I don't yet have gray rims for the front wheels, so no picture for that. I also tested the Model Team 30 x 13 wheels (mostly from 5590), and though the rims actually look pretty good IMO, the tires I have for them look - let's say - "interesting".