I'VE GOT A HAYNES MANUAL AND WAS THINKING OF GIVING MY DEFENDER 90(1998) A BIT OF A SERVICE SO IWAS WONDERING IS THERE ONE TOOL FOR THE OIL SUMP / GEARBOX SUMP AND SWIVEL PINS OR DO I NEED TO BUY DIFFERENT ONE'S ??? SORRY IF THIS IS A BIT BASIC FOR YOU GUYS BUT WE ALL HAVE TO START SOMEWHERE.