While they may physically fit with some equipped with accelerator pump and some without, the question is why...if you are wanting "plug and play" / "turn key" operation, there are plenty of minor differences inside that you would still have to "play" with adjustments and of course, the internals may have "hidden" mods like Dyno Jet and other things that would drive you crazy...unless you are patient and willing to make those "cutting In adjustments"...and sometimes mounting brackets, cable dress and other things make the differences a bit problematic as well.