oil cooler install

My rebuild from top to bottom inside out on a 1980 KZ 750 H-1 LTD is almost done. I want to install an oil cooler but am not sure where the inlet and outlet oil lines should connect to the engine/crank.There are 2 bolts on the lower crank LT and RT sides laterally which seem to serve no purpose other than plugging oil passages.Can I remove these 2 plugs and connect my oil lines here then up to the cooler?
Thanx Bryan

NO, I believe that's a 4 cylinder motor. If so find a GPZ oil pan and cooler and run that setup. The other way to hook it up is with a special fitting to the rear of the oil pan that blocks the original oil flow so it goes through the cooler and then back in on the right side bolt.

Mark