If that is the question then it would be a GU that would fail first, Know of a few patrol owners to buy a GQ, upgrade 2 a newer model being the GU then upgrade back down 2 a GQ *LMAO*
And yes I would buy a fridge build in the mid 80's, if its still working 20 years latter I know it was built 2 last... not like the fridges of 2day, lucky 2 get a year out of anything built these days.