I haven't found a single racing exhaust header for Fiat 127 1050cc so far so we had to build one of our own.
This is a 4-1 type and tuned for high rpm's. Rpm's are the way to get atleast somesort of power out of an engine this small.
The whole exhaust system had to be rebuilt.
Lambda was installed for air/fuel ratio meter. Main pipe is made from 2" stainless steel and it has 1 stainless freeflow muffler...
Sounds are pretty impressive I can tell you.. It was a pretty tight fit, some parts had to be welded while the header was already installed..
So basicly you have to take the whole engine off if you want to take the exhaust manifold off...