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That was Honda's approach in '84 and '85, with both the XR200R and the XR250R (along with larger models). With the new four valve head, they chose to keep the two exhaust ports separate, and that style carried through to modern bikes (like Spud's XR-L). I believe that the dual carb arrangement only lasted two years, after which they created a manifold that would allow one carb to feed two intake ports.
Yes, the carbs need to be synchronized, but it's not usually critical. If it was me (and I had synchronization trouble), I'd swap to the later model manifold and one Mikuni.
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Weldangrind
"I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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