Oil pressure gauge question? need help fast

Ok here the thing ......my friend want to put a oil pressure gauge on his 89 civic 1,5l. Were is the best place on the engine to put it and must he drill or just remove something ....i know civics dont have oil pressure gages . and i dont know anything about em so can someone help me out :smile:

get the fitting from tunertoys.com and use the oil pressure switch behind the block.

http://shop.vendio.com/funinfeenix/item/646388659/index.html

the real link to the adaptor

take the stock one out put a t fitting in it and stick your sensor there

the stock one is near the oilfilter the upper one?

yea you can clearly see it if you happen to have your intake manifold off if not grope around till you find it but i would do it when you change your oil and you have the filter off and outta the way