Here's the reason it is so cheap:
It is designed for a 912. I got it at a swap meet for cheap enough and I was going to use it on my 914 2.0L. The 914 flanges are flipped upside down from the 912. I cut them off to flip them and re-weld them but never finished. The spacing matches the 2.0Lonly! no good for the 1.7L/1.8L engines sorry. You can either continue on my path and use it for 914 2.0L or undo my work and use it for 912. I imagine any decent muffler shop or someone with a welder could make short work of it.
The last picture is a the similar exhaust I had on my 1.8L.
$100 OBO!
- it's NOT ok to contact this poster with services or other commercial interests