The dealer has bought the vehicle back and we've had time to calm down. The missus is no longer referring to the woman at Nissan Australia in terms of four letter words. Have decided to keep the Patrol and, if the motor blows up (or should that be "when" the motor blows up), I will put a V8 diesel in it. After lots of talk last night, we decided that the Patrol was too good to be rid of (great tray and storage, the canopy fits well, etc). In the meantime, I've taken the canopy off, put the driving lights back on and am waiting with baited breath for the letter the now only slightly-ruffled missus is putting together to go to Nissan Australia and Fair Trading, as well as anyone else she can think of who may be remotely interested. A friend has a radiator repair business, and I may get him to rod the radiator in the meantime.

I would be interested if anyone else has put a V8 into a 2010 GU Patrol, where they sourced the motor etc. Have been looking at Marks 4x4 Conversions, and the prospect looks promising.