I do need to lower the rear about an inch, the "rake" is adding to my frontal area. I don't think the first pic is totally level, so it's a bit exaggerated, but the back of the roof is higher than the front. Same with the rockers and skirts. I just hope I can get the rusted shock bolts out in one piece! I'd lower the whole car, but I drive in snow and occasionally off road. The front air dam and skirts are about level with the lowest parts of the underbody, maybe a little lower.
It's actually lower in winter with my smaller snow tires. The air dam plows snow pretty good!