[KMPrenger]

This doesn't really matter much from a design perspective, but if something like this DID make production one thing that I think everyone would very much prefer is that the spoiler on the rear with the two raised ends, be a seperate, removable piece. I think you could have a spoiler that attaches to the trunk, that is low in the middle with two raised ends to achieve your desired look.

My reasoning is that if it is molded into the body, you a stuck with it. if it is damaged, you are stuck with it. If you want to change it or modify if...well, your stuck with it. Also, it would be easier for GM to add different types of spoilers depending on the car (base, SS, Z/28).

Just a little thought I had while looking at the rear. I do like the spoiler though...not saying I'd want to change it out immediately or anything like that.

I also feel that with rearend D3, dual tips on each side would look good. With the other rear end with the round tail lamps, it would likely look a bit redundant.