Fein's got you on this one.
The biggest put-off is how quick the back looks - the El Camino cutoff piece looks a little unfinished, and you hardly touched the bodykit. Still, I think you did a better job with the wheels (GT's picture was obviously taken at an anlge) and the hood scoupe looks cool. His lights are a little weirder than yours, too.
And c'mon, how can you not love the hatchback with Bimer tail lights?