I have a g37xS 2010...what options do i have for front lips? i like the OEM sport lip...but im also loving the carbon fiber look as this weekend im picking up the autokits rear carbon fiber diffuser...also, can anyone tell/show me exactly what the "rear valence" is? thanks in advance !

 

Might shoot Ravspec a PM and see what they offer for the front
https://www.myg37.com/forums/members/14129-ravspec.html
The rear valence is just the recess in the back lower bumper and also includes the tailpipe cutouts, the diffuser is the piece that goes over the valence. Some vinyl wrap the valence to give it a nice contrast, like this pic~

 

dont think u can retrofit this, u can ask:

Documento sin título

 

Access Evolution front lip!