Lowering Kit

I am looking for a lowering kit but there seems to be some misunderstanding here. Daytona history says the 2001 model has a single swing arm but my bike is a 2001 (Y) reg with a twin swing arm. according to all data the double swing arm never came out until 2002. Therefore I am struggling to buy the correct lowering kit. has anyone lowered their bike or can inform me if the 2002 lowering kit will fit my bike.

Thank You
Ian