Putting laser system on D3G and D6N need some mechanical advice?

Wanting to put my laser hydraulic control valve on my D3G and D6N dozers.It is a laser alignment system.Need to get power beyond off dozer valve.The plate too get power beyond is handy and on the end of the dozer control valve. It looks like i need to change the end plate or drill out the plate and thread it for the power beyond fitting to go to my laser valve.I did this once on a Vermeer three point backhoe to be put on a JD tractor.There was a special plug i used there to change it too open center i believe,but didn't go power beyond. Does power beyond need anything ,but fitting on dozer control valve and line going to my laser valve? I have a manual for putting my system on JD450 dozer,so got some info i need.Shows how system needs to be connected.power to valve,return too tank,connect to lift and lower lines on dozer cylinders. My machines have metric hoses,so will need source to metric fitting.Have the fittings off the 450 Deere dozer that i system was on before i got it. Anyone got parts number for plate on valve of my machines for power beyond plate.Looked in my Cat parts book didn't show any?Any help appreicated !