F115 water pressure gage

I would like to install a water pressure gauge on my F115. Looking thru the owners manual, I dont see any directions for this application. Does anyone have any recommendations for a specific brand of gauge as well as installation procedures?
thx
jt

[boats.net]

To use Yamaha water pressure gauge order part number 6Y5-83660-10-00 gauge and 688-83667-00-00 sender.
To use aftermarket gauge you will need to order MAR-WPRES-AD-TR adapter fitting.
Don't have a good drawing of sender port location on F115 but it is just behind dip stick.
F25,F30,F40,F115 WP Port.JPG