How about getting him his Go Racing pack, and booking his ARDS test? A 3sgte with a 10k lump would go very well in the mr2 championship super GT's
That will put a grin on his face, no matter how fast he has been, cars or bikes!
Or if he doesn't fancy that, club msv do the trackday trophy (must have a race licence and race regs on car), or 750mc do allcomers races, which are pretty good value.
Or how about a weekend trip to the ring? I'd be happy if santa bought me that