Grease everything, spare fan belts, radiator hoses, check your spare, check your wheel nuts, a good torch, a can of Holts instant flat tyre fixer, a can of Bars radiator leak stop, 5 litres of water, a good jack, a piece of 12" x 12" x 2mm steel plate, wheel brace, small universal tool kit....
Ohh and a carton of Corona in the eski..........
Enjoy your trip