Hi John your notes are good and inspired me to do a check over what I had so far.
Here's my notes from AFM, from a photo, and from "RFADD" build files via Richard G.
RFSVs = 50-391 to 50-419
"RFADD" build info so far:
50-420 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders but std cam paint - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-421 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders but std cam paint - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-422 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders but std cam paint - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-423 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders but std cam paint - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-424 FFR "RFADD" build, unseen
50-425 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders but std cam paint - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-426 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-427 FFR "RFADD" seen AFM (FFR with winch and double jerry holders. With std cam paint.)
50-428 FFR "RFADD" seen AFM (FFR with winch and double jerry holders. With std cam paint.)
50-429 FFR "RFADD" seen AFM (FFR with winch and double jerry holders. With std cam paint.)
50-430 FFR "RFADD" seen AFM (FFR with winch and double jerry holders. With std cam paint.) AWOL fleet.
50-431 FFR "RFADD" build, unseen
50-432 FFR "RFADD" seen AFM (FFR with winch and double jerry holders. With std cam paint.)
50-433 FFR "RFADD" seen AFM (FFR with winch and two single jerry holders - has definite telltale signs of double jerry holders but changed back to singles. With std cam paint.)
50-434 FFR "RFADD" build, unseen
50-435 FFR "RFADD" seen AFM. (FFR with winch and two single jerry holders - has definite telltale signs of double jerry holders but changed back to singles. Has PRegt cam paint. Has snorkel, std fuse box position, std Perentie rims and tyres.)
50-436 FFR "RFADD" build, unseen.
50-437 FFR "RFADD" in-service photo only (FFR with winch and double jerry holders, PRegt cam paint. Has spare tyre mounted on driver door. Has RFSV type bullbar, split rims with Road Treks. No snorkel.)
50-438 FFR "RFADD" seen AFM (FFR with winch and double jerry holders, PRegt cam paint. Has snorkel, std fuse box position, std Perentie rims and tyres.)
50-439 FFR "RFADD" build, unseen
50-440 nothing known
50-441 nothing known
50-442 nothing known
50-443 nothing known
50-444 Motorcycle
50-445 Toyota LWB GS.
Did the "RFADD" builds get other bits? Bits like RFSV front diffs, rear discs, and high set fuse box? Not very likely, but...