MRTurbo
I think the 3SGE has decent 'headers' anyway
Yes, they are fairly good, but not that good they can't be improved on.
The pic shows stock left, and Fujitsubo Super Ex right.
Unlike the stock headers, the Fuji's have larger
equal length pipes, the bends are mandrel bent and the welds are much smoother inside, especially at the bottom collector. They also stand out further from the head giving
a lot more room underneath to reach that PITA oil filter.
But probably not a fair comparison, to compare an expensive custom hand made item to a factory produced one.