cobalt trunk g5

I've been searching for the past few hours on countless forums, Is it possible to swap the g5 sedan rear end with the rear end of a cobalt coupe? I can't find any videos or real evidence that someone has actually done it, all i've seen is that 'people have done it before, try and find their...

i was thinking of buying a cobalt trunk with the ss spoiler on it for my G5, but i dont know if it will look bad. has anyone done this? i bet someone has :p but im looking for some pics to see what it would look like. thanks