i wanted to know what the aerokit looks like, im not talkin about the spoiler, but the under body kit for it from the factory, how does it look like as opposed to one without one, can someone show me a side by side pic of one with and one without so i can see the difference...

 

You cannot see the underbody diffusers side to side. They are panels bolted to the underside. Check out the detail section. There are pictures there.

2003.5 G35C BL/GR, NAV, PREM, AERO, TINT, SPORT, Splash, V1

 

if you look in the rides section of the site you'll see what all that looks like... and the aero kit is just the splash guards and front lip spoiler...