Its not a street car, ground clearance is irrelevant. Actually in a race car the more ground clearance you have the slower you'll loop The CLA's splitter you refer to as a snow plow is in fact functional as it helps keep the front tires stuck to the ground during high speed straights, otherwise you get front end lift which becomes a real problem for braking and turn ins, where the splitters function really shows its worth, all that front downforce plants the tires right through the turn and aloows you to get back on the power.The body kit on the front of that is a bit over the top I would say. It makes the CLA have basically no ground clearance and it also makes me feel like it could be used as a snow plow in a pinch. I get that its part of the look, but I would say no thank you. I like the Dunlop tires with the blacked out rims though. It's more about how fast it goes with the upgrades, not what it looks like in the end.
I'm betting the CLA Race has the CLA 45s engine underhood.