right, well i have 3 days off work now so plan on fitting my oil pressure gauge and a few other things. this is what i have:

i also have the necessary wiring, just not in the pic. ive done a search on here for fitting, and its mentioned somewhere that you use a sandwich plate between engine and oil filter? is this what i need? then does the sender screw into that? this is the last electrical thing im doing to my car so cant wait for it to be done! me and electrics dont get on haha! p.s its a z20let if it makes a difference