projekz: Thanks a lot for checking it out. That pretty much concludes it for me. It will not fit.
Not that it means I won't buy a Pathy...
Despite much creative guessing on why I asked the question, none were even close. It is actually an issue of money. $22.000 vs. $36.000 to be more precise.
You see, Nissan never imported any Pathfinders to Norway before the 05-version, which I quite frankly don't like. So to get a proper Pathy, I need to import one myself, from Germany for example. And thanks to a rather interesting tax system for registering cars over here, the storage space in the rear makes quite a noticeable difference.
If a car has no seats behind the front seats and can fit a box with the dimensions I asked about, it can be registered as a van. Vans are only taxed 20% of ordinary cars. So with some boring numbers, I can show you the whole picture:
Used Pathfinder: $15.000
Import taxes: $4.000
Registration taxes: $17.000
If I register it as a van, I can cut $13.600 off the registration taxes just for yanking out the back seats. Not the end of the world, but enough for me to look into the possibility. So, that was a lenghty explanation you might not care about. Just wanted to tell you what I wasted your time on, leaving you in the dark would be rude i think.
Maybe I should look into special taxation on cars with waterbeds in the back...