rear bumper cutting poll

I wanted to ask your opinion on what to do with my rear bumper. I am planning on changing my exhaust to a single 3". The problem is I do not want 2 exhaust cut-outs in the rear bumper.

I should also point out if you do not know already, I am building my car for auto-x and eventually track duty. I also still drive it on the street so everything is kind of a compromise.

I will either run one muffler on passenger side, or a dump down in the middle of the car. I think I prefer the one muffler idea and it should sound better. I will be using a race muffler that weighs less than 3 lbs. so not a big weight penalty.

I am undecided if I want to use a rear diffuser or not. I have seen multiple fwd track cars that are very fast without rear diffusers.

If I decide to run a rear diffuser I will probably have this company make one for me or atleast the curved middle section. I can always DIY the side sections.
https://www.facebook.com/media/set/?...4826698&type=1

Option 1: Don't cut the bumper you idiot.

Option 2: Cut the bumper pretty much straight across like the following vehicles. The fwing is the fastest fwd track car ever and doesn't have a rear diffuser. This rsx is also fast without a rear diffuser. I really like how aggressive these look with rear tires exposed.

Here is the fwing 2.0 rear


RSX rear



Here is a link to the rsx in hondatuning
http://www.hondatuningmagazine.com/f...ra_rsx_type_s/

Option 3: Cut only the middle section like a lot of mazda miata owners do.


This would remove the exhaust cut-outs while still being most stock looking.

Option 4: Cut only the sides like villo did to his 3rd gen tl. I think this would require a diffuser to look good.