This is my experiences with a couple of photos to show the key differences. If you know of any other variants then please join in!
Firstly, a standard 185 (non-safety latch?) one that came off an unmolested RHD 2WD singlecab, factory galvanized too!
Note the almost flat profile of the catch:
Secondly, a 205 type from my 1995 SA 2.6i which just about accommodates a 205/65/15 (but it does have a good sized dent, must fix that!)
Note the much taller catch bracket:
I understand that the wires for each are also different. Does anyone else know of further variations?