[Luckypants]

I know BluePete made his own topbox to replace the pillion seat from a second hand seat base and givi top box. Perhaps he can give details (or maybe already a thread on here).

Using an old pillion seat as the base would allow the soft luggage straps to be routed under the top box/base in a similar fashion to how we fitted SpeedyClaire's panniers under her tailpack (which fastened to the pillion seat).