само ще кажа ,че pm3 буталото е по високо от d16ковите само pm ig могат да го заменят http://www.google.bg/imgres?imgurl=http://users.telenet.be/christiaensjelle/piston%2520vergelijking/DSCN0964.JPG&imgrefurl=http://www.d-series.org/forums/engine-building/58854-d15b-dual-carb-build-need-some-advice.html&usg=___uZGlQ6E2q9so6qQrYkv-vUIDZk=&h=768&w=1024&sz=189&hl=bg&start=19&zoom=1&tbnid=JAEXI2WIFflCUM:&tbnh=113&tbnw=150&ei=e2e6TtO1H5DN4QTU-qCBCA&prev=/search%3Fq%3Dpm3%2Bpiston%26um%3D1%26hl%3Dbg%26sa%3DN%26gbv%3D2%26tbm%3Disch&um=1&itbs=1