Hi all,
Since discovering that it's possible to install a 997/991 GT3 exhaust on my 87 911 3.2, I've been searching for a solution and wanted to document the project here.
After searching the forums I've found many examples of custom headers build to match the GT3 muffler. After a bit of emailing with Brian from
Rarelyl8 I learned that he was working on a set of active headers that's using a vacuum valve to switch between the primary and secondary input on the muffler. I was sold.
Below is the headers (with heat) from Brian, and a 991 GT3 muffler coated at
PerformanceCoastings in their special "Porsche Grey" ceramic Chromex coating
A few photos:
The set is getting installed this week, and I'll be following up with more photos and videos.
/k