I eventually found a pair,two actually, I went for the Perry Wars of the Roses wagon horses, beautiful sculpts of horses and they are big enough for the hearse. I also noticed an ACW set of horseholders, one mounted guy with three other horses, throw away the guy and you have four excellent horses for your hitching rails. The purists of course will notice they have McClellan saddles, but I can certainly recommend these lovely figures.
And thanks for all the suggestions.