only difference i found when doing mine was the water pump, there a few it could be, the first one i got looked ok but it didnt have the enlongated hole at the top where the smallest bolt of the lot go, i cant remember the part number for the one i needed, but all the belt kits are the same i believe, i got my gates kit from CBC bearings through work (mechanics workshop) which came with the blue belt and all the seals and idler and tensioner,
hope i helped lol,