I currently have a pair of old an gnarley HS2s and the aforementioned airbox. The carbs are in dire need of cleaning and a rebuild while the engine is out, however, Ive been advised that the plans we have for the engine would be better suited to a pair of HS4s.
I'd like to keep the old airbox. Is this possible?
Can the old air box fit onto the HS4 carbs?