my 07 factions worked fine on my 08 response. Now my Liquid Force bindings didn't line up as well, I had to modify the baseplates a little to narrow up the hole spacing
I have a recoil and had the factions on them.. I will say there is a flex difference when you put a none slingshot/company boot on the board.. With that said I also just got 09 answers yesterday as well..so I might try that setup too