Here are a couple of pictures of the Pontiac G8 V6 and V8 next to each other, apparently very similar, only the back taillight, tailpipe and door handle are different. So far we have driven the V8 for a few minutes on the highway. The right is very comfy and the cheer power of the V8 is really fun. But the gearbox is a bit sluggish, slow to change gears and spoil the fun but we'll tell you more after a few more miles...