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i have a 2005 polaris 800 motor that has been ported and polished by union bay head work aslo done by them crank bearing welded decompresion holes pluged and the carbs have also been bored i cant remember to what size right off hand but and the clutching has also been done by them i am asking 2500.00 obo if you have any questions you can call me my number is 307-680-6010