Hi Kelly,
okay Mitsubishi. The Delica is not a coomon car here, we are at present selling all our Mitsubishis because of spare problems. We have one Pajero V6 parking now for one year (!) at the garage (okay, it was also problem of wrongdoing by former garages). Now we are in the stage, that we hope the car will be running in June, when we are back inTZ (cross fingers).
If you like to have only small problems go for a Toyota. To ship a car to TZ I can only say NEVER. It is taking weeks until you get the car out of the harbour at least a fried of mine did this last year with this problem. The problem is, that the cars from Europe are shipped in containers, from Japan in RoRo. I did it once and shipped to South Africa, but you need a Carnet. The ship (Wallenius Line) was like a German train, came to the port in Port Elizabeth morning on the minute, afternoon I drove the car already with all paperwork done. Then we travelled in 5 days to TZ, visiting Victoria Falls. If you like to ship, take my advise and go to SA.
To ship it back to Europe I have no experience, but I know one, who did it, I'll get in touch with him. But also it was from SA.
If you like to buy a car in Japan, go for a Toyota Surf (in Europe 4Runner). It is reliable and no probelm with spare parts. But for me I have to admit that my favoured car is Subaru, I drove in Europe and TZ about 7 cars, at present a Forester in TZ and an Impreza in Germany. It depends what you like to do, for sure the Sernegeti with the corrugation and the crater are not recommendable (even the Landcruisers need after the Serengeti a check), but everything else is fine.
I hope my help was sufficient. Enjoy the planning, it is more then half of the fun.
Johannes