I'm looking to make a custom rear diffuser for the rear of my sedan. I'm looking to either do CF or fiberglass. I dno't mind cutting up my rear bumper, i think pics would explain what i want better. Just remember mine is a 4door sedan so Here are some pics and ideas:

There these subtle ones


MY FAVORITE!



I kinda like the 90degree steep cut rather than a rounded off cut like this one






Then there's extreme ones








Or just make a whole bottom section



Here is a pic of my car if someone can photoshop it to see how it looks or something

 

just something simple like this is okay too:



so which do you guys think would look best any photoshop experts?

 

Your car looks nice

Good luck on the diffuser