I came up on some VF2's from an unknown triple for $1 from our local thrift store. I have researched every number on the box & haven't found anything showing what they're for. They fit my 03 Pro-X 800 but want to make sure there wont be any problems. If it were for a Non-VES would they still work? They have 4 petals per side instead of the 8 per side that come stock (actually one reed per side but you know what I mean). If they will work, what kind of HP gain am I looking at over stock? Thank you.