hey ray,
i had to use a sandwich plate, they have them at justjap, but if ur in melb, go to burtons (i think thats how u spell it) on princess hwy in dandy, they have them for 39 bucks...n u just attach the sender to the sandwich plate, n put the sender between the oil filter n engine block...i reckon wen u do this to change ur oil n oil filter too just to get 2 birds with one stone.
hope that helps ya.