the bottom is not flat it is just like the stock one. you can not put on splitters without it looking wrong. there is a guy on the board with a steel grey aero kit with splitters on it and they don't look that goo IMO. i mean dam teh topaz one looks so nice but im all about splitters.breyton3er said:dam the side skirts on the aero are so nice. i love those things. can you do anythig else to the aero kit like splitters. is the bottom of the front kit flat or does it have a stupid bumps like my stock one does.