How about a kit bashing between the Grumman Albatross and the V-22 Osprey?
Albatross fuselage sans wing mated to the entire wing assembly of the V-22 Osprey to create a tilt-rotor amphibian. The wing mounted floats from the Albatross will need to be located on the Osprey wing somewhere near the engines I suspect. Reality check about suitability for actual flight to be ignored.
1:72nd scale Revell (former Monogram) SA-16 Albatross kit with the aforementioned parts from the HobbyCraft, Italeri, ESCI, or Hasegawa V-22 kits, depending on your ability to afford this project.
1:144th scale now has a V-22 kit but I am not aware of any Albatross in this scale.
1;48th scale Trumpeter Albatross and of course the Testors'/Italeri V-22 kit if you really want to spend some money.