You're looking at an original 906/910 Porsche exhaust system. After talking to Carl Thompson, he made an interesting suggestion and said I should use it in my 914-6 GT project. This would be a tempting option, not to mention it will also be a very cool competition exhaust system for the GT.

Here is what Bruce Canepa used in the Lufthansa 914-6 GT using factory GT headers https://pbase.com/9146gt/image/112669697 - https://pbase.com/9146gt/image/112669712 and to my surprise, here are a couple of photos showing Harry Bytzek's 914-6 GT with the same 910 racing exhaust https://pbase.com/9146gt/image/137663608 Very clever! Remarkable to see that!

I will detailed the installation of the muffler heat-deflector, the 914-6 GT headers, megaphones and the 906/910 racing exhaust system. These exhaust options are 'for competition only'.