I did this on mine about 3 years ago. Replaced them all and still good, but the system shits itself from time to time and throws a fault, which disappears on restart. The HVAC and airbags are a bit senile in these old rangies, but you just replace the bits every 10 years and youre sweet.

Appreciated

Its not actually 'that' bad to do the passenger side on a RHD P38, I'd say takes no longer than 20 minutes to get to the motor but about 30 minutes to unscrew it! That's if you have the semi-correct tools too... Not needed to touch the other side and really hope I don't ever need to!