SS would have the red plate on the gearstick, so I guess it's a V6. On my vacation to the US I saw a lot of V6 with SS rear Spoiler, maybe it's some kind of package?
Besides the rear light design
my rendering seems to be pretty accurate. I will update the rendering to the new lights later and also update my latest clues from the Malibu to the fronend
It will be fun what those "I have confimations that the facelift was cancelled" guys will say now