Im started researching body mods on my 2012 G37x, I have found that is pretty difficult to find front and rear bumper lips that actually fit. Any recommendations on front and rear bumper lips for my car. I recently installed a new intake(Takeda) and exhaust(Ark grip) system

 

I just put on the OEM sport spoiler for non sport front bumpers like you have. I like it and fit is perfect but kind of a pita to put on.

https://www.myg37.com/g/picture/14005754
https://www.myg37.com/g/picture/14005752
after install on my car.

for splitters, ez splitters will fit our car in the sense they are universal.

 

I second this. The instructions aren't very clear, but you essentially drill 5 holes based on their crappy paper template + marker then install them with nuts, bolts, clips, and adhesives. It's probably the best fit given your options and can be bought pre-painted.

 

Interesting.
My experience with the OEM front lip and rear spoiler was:
I thought the directions were exceptionally detailed and the templates were spot on.
Got to take it slow and triple check those templates though.

 

The worst part of the front spoiler was the time to cut, tape and make sure the templates were perfectly aligned. I second was Jaydee23 says and triple check the templates when taped on. When I was done drilling everything lined up perfectly and was relieved. I didn't have a 10mm bit so used the closest I had which was a 3/8 (approx 9.5mm). The 3/8 hole was plenty big for the side bolts.