What size wheels do you use?

[Crabtree Farm]

What size wheels and shafts do you use? I am getting a 44 inch Classic stallion that I want to show in driving this coming year. What size wheels/shaft would you suggest? He is very streamlined (Double Stuf son). I think the shafts on my current cart will work, but the wheels are too small.

Did I hear that Houghman went out of business? Is there any way to get taller wheel from another supplier that would work with the houghman carts?

Any help would be appreciated.