The GM engine has the fuel injection pump and injectors on the front side of the engine (as you look). In the case of the Isuzu they're fitted at the rear.
The GM engine has the word 'DIESEL' on the rocker cover. The Isuzu has the word 'TURBO' in red letters.
The Isuzu engine does appear to have two air filters. In fact though it only has one. The box on the o/s inner wing does not contain a filter element......
Our honest used car pricing is a little bit different to all the others. You can get to our values through make or model - you don’t have to follow a prescribed route. Plus, it’s live, which means we can react to changes in the market quicker than any printed price guide.