Zenoah stuff mostly fits
Spacing is 42.5mm at manifold on Zenoah 62 and 40mm on DL/DA. I just bought this tuned pipe/silencer and havn't tried it yet. But, it LOOKS quiet and is supposed to add 25% power
There is room to trim 1mm out of each mounting hole on this S/S header.
The price? Well about the same [

]