Well, 1.2HP per cubic inch is completely underwhelming given all the "tech" the thing is supposed to have.
They screwed up at every turn. it should have been 4.125" x 3.625", with a 6.125" rod. That would have been 388 cubic inches, not 375, and been a lot better layout. It's common knowledge in the high performance business. And with everything they have to work with, it should be around 1.5HP per cubic inch, normally aspirated.
Considering the Corvette recently had forged pistons and titanium rods, it is a step back, and if they wanted to save money, all they had to do was go to forged steel rods (they didn't) and stainless hollow stem valves (which they did).
A solid 10 degrees more duration, and at least 0.050" more lift would be fine considering the LSA. Honestly they could have gone with at least 218 and 0.600" and been just fine, if I can get that to pass with a carburetor and no electronics, without a converter, surely they can do it with all of their "technology".