In particular, are the top and bottom hose connections in the same position? My thinking is, if the 6 cyl ones already have a thermo fan fitted (they do, dont they???) then this might be an easy option for a low-duty V8.
Or will a 6 cyl fan fit onto a V8 radiator?
Mate I don't have much experience about this but if it was my car, the idea of a V6 radiator trying to cool a V8 would make me uncomfortable. And yeah, as far as I'm aware the V6 should have a single electric fan.
hose ports are different size and on opposing sides.
you can have nuts braised onto your v8 radiator and mount a VS (only vs not vn-vr) fan assy)
VN-VR fans wont fit and hit on the water pump pulley, you will need VS (shallow motor)
HTH
Drew