[DonaldDuck]

I'm guessing one of them is the one used in Single player mission "Lure"
Which is visually unbreakable except for the doors. Apparently the lure rancher has better off-road handling. handling.cfg seems to say otherwise.

Quote:

A unique Rancher (internal name "rnchlure") can be spawned with a spawn cheat in GTA San Andreas. The vehicle's internal name suggests that it was intended for use in the mission "Lure", however a regular Rancher is used in that mission. The only distinction of this variant from the normal Rancher are its black-tinted windows (which obscure the occupants of the vehicle, a central element of the Lure mission). Unlike the normal Rancher, the "rnchlure" version cannot be exported or modded at mod garages. (GTA San Andreas)

The cheat JQNTDMH should spawn the RNCHLURE (id: 505) in singleplayer, if I remember correctly. Since only the original Rancher (id: 489) appears in the game, this is the only way to obtain the LURE version without mods.