Check on Ebay. There is a guy I bought my lowering kit from called Solow or something like that. He sells the Roadking lowering kit. The ones I got were much stronger and better made than the White Brothers ones that HD sells.
im not sure but with the leather bags you may not be able to use a lowering kit...fiberglass bags have enough room for the shock placement with the kit. good luck!!
I ended up with a kit from Dennis Kirk. Was supposed to be White Bros. kit. When it came in it was a Burly kit that they stuck White Bros. sticker on it. Not sure if it's true but Dennis Kirk said that Burly is buying out White Bros. Anyway, lowering kit didn't fit with the bags even though they said it would. Instructions suggested cutting away the back of the bags. Don't think so!!!!
Sent it back. Ended up getting a deal on HD low profile shocks from my buddy. Did it that way and now it's all set.