G'Day mate.
There are heaps of differences if you want ot make a RFSV clone, info listed here:
L/R 110 4x4 Regional Force Surveilance Vehicle (RFSV)
If you want to make a superficial copy;
Start with an FFR with winch
Add Brush bars along wings and sills
Add spare tyre mounts to diagonal brace bars on ROPS
replace rear seats with side storage bins
Add 1988-1990 90'43lt fuel tank, brackets and fuel system under pax seat.
Foot vents. Izusutoo-eh has discovered some suitable units for sale at marine shops as scuppers!
2 x Dual jerry carriers
Split rims (ouch on the price) with Xtra grip High-miler tyres
boat racks if you must.
Have fun!

