I did the conversion on mine.
I think there are 2 widths of radiator so make sure you get the right fan width
I used the standard 2 speed volvo relay, and one of these in the radiator hose:
https://foundry4x4.co.uk/index.php?r...ch=thermostat+
On the diesel it's a very tight fit, I imagine it's a lot easier on a 4cyl