So I want to build a single exit exhaust system. The only issue I'm running in to is that my diffuser has two exits. Without buying a new bumper, is a way to buy a diffuser with one hole or indent? Or do I just have to patch it, sand it and repaint it?

 

As far as I know one does not exist.

 

You would probably have to mold your own.

 

Use body filler and just sand until flush? or what would I use to mold it myself?

 

I'm not trying to be a dick, but if you have to ask the question, don't attempt. But if your willing to try and spend 20-30hours on your first trial then here is how. You need fiberglass fabric, resin, and bonds aka body filler. You fiberglass it shut starting on the back side of it. Once you build up the layers, you use the body filler then sand until flush. Primer make sure it looks good if not re sand. Then re primer it, then paint. Takes a really long time.

 

Single exit diffusers don't exist, you have to DIY or have a body shop fill the gap for you....Gary

 

Cool thanks, yeah I will just have a shop do it so it doesn't look like a hack job.