mx270
Guest
all 3 are pretty much the same 863 being they very first head IH came out with on the Axial Flow the 963 is just a newer verison of the 863 the 1063 only has some major improvements and that is water pump berings means you don't have to grease them the only other difference is the 1063 uses a heavier drive chain and gear boxes otherwise there is not much difference