The kit for the #1 valve from cnh is:
718348056 REMOTE CONTROL VALVE Kit, Single Spool Rear Remote Control Valve #1, Includes: Ref. 2 thru 28, Order Thru Wholegoods, Start Year: 09/01/1998
I've included a link to how it mounts to the tractors hyd cover.
it's a fairly intricate valve block... not something you could easilly turn out of a block of aluminum and mount.
aside from finding a high pressure line from the pump and simply tapping off there via a power beyond valve, and then returing the flow to the line.. I doubt there will be an easy way. If this machines power steering are fed off of those hyds, you will need to make sure they are still powered when using the remotes.. I know my 7610s taps it's hyds for the ps from the hyd cover....
how bad is the kit price? 700$ - 900$ I've paid that on old fords to get remote valves.. pretty common... beats redesigning the wheel...
soundguy