Well you might not need to. Was looking at some Attic potter (actually got to hold a 2500 year old cup, pretty cool stuff) t'other day and it seems that early centaurs may have been rather more "panto" in desing, human body and leg with a horse's body and hind legs only.
I really just wanted to work in that I'd held the cup here.

But yes the centaurs were deeply cool. Life's good if you don't need reins:)