Does your tractor have a loader and hyd block?
If so, then remove the PB hose on the hyd block and connect the PB line to the new valve, and then connect the PB from the remote valve back to the port on the hyd block.
The valves should now be n series for a complete flow path.
All tank lines go to tank.
Price will be determined by the valve you purchase as to the number of spools, etc.
If you only need a two spool valve, we can guide you to the right place.
The valve should have a PB port with a PB adapter.