The thing that looks like a gauge is called a "Tax Disc" over here in the Uk we have to pay tax to drive on the roads. You can either buy one that lasts for 6 months or 1 year. I still have space under the seat with this undertray. you just cut the Mudguard/fender off around the edge of the boot space, and it slips over the top.

'02 ZX-6R {636}

'02 ZX-6R {636}