On my NH TC40S I went with the additional NH two spool (old school) kit. Simple enough to install but had to remove the right rear tire for initial working access.
Hose routing went along the inside of the FEL's left arm. Had to build 1/4" angle brackets, one for the QD's at the FEL dock and two on the FEL cross arm. HINT: I used my shop's empty air hose and a marking pen to measure each hose length. Have on hand all of the hyd fittings so they can be worked in to the finished hose lengths.
Michigan Iron and Equipment custom fabricated the removable four tooth grapple to fit my OEM bucket-good folks to work with as we spent some time perfecting the design before fabrication began.
After years of brushing, limbing etc. and then having to tie it all down for transporting to the burn pile, the grapple addition is one of mymost favorite attachments.