When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
That is the easiest place.
There are a row of square headed plugs down under the oil cooler on the drivers side that go into the oil gallery. Any of them have oil pressure but you have to watch the exhaust manifold. If I were going to use one of those I would only use the copper tubing for the oil pressure gauge feed line, the plastic line in that area would be dangerous. Touch the hot manifold one time and it has a hole in it.