Thats not a 79 troopy, rather a 76 wagon. Newest model (new front clip) and yes they're extremely capable and reliable vehicles. From the front clip back, theyre basically the same vehicles they have been since the 80s as far as frame and body goes, the engine was changed from a 3f to a 1fz and the diesels im not sure as we never got them. Since 2007 they changed the front clip, changed the engines from new ones, added front airbags and a couple of safety features which is the model you saw. In 2013 they added ABS braking, the dual cab body to the roster and then said that it will be the last year of the 70 series as we know it. Im sure what will replace it will be awesome but it can never be the same...
The 70 series is not available in the USA because it doesn't meet any sort of the current road safety standards. It only has two airbags, no abs, no traction control, no crash or stability testing, etc..