Not sure what's driving your need for the relocation kit, but suggest you take that into consideration.
I needed to push the tourpak back and up slightly to accommodate a larger seat (currently have the Road Zepplin). George Anderson's product was a perfect solution. It is extremely well designed and built, and was only a one-beer install project.
I have seen positive posts on the Kuryakin product, but opted away from Kuryakin because I didn't want to create the gap problem mentioned in Scaramooch's post and didn't want to shift the weight any further back over the rear wheel than necessary.