40K Rough Rider Horses

[IonControl]

I'm looking at doing an IG (AM) Rough Rider squad conversion.
What horses would work?
Suggestions from the GW lines preferred.
I've seen other miniature horses from other manufactures, for example 28mm samurai horses that do not have barding, but I'm not sure about the actual sizes.

[kodoth]

I used Empire Pistoliers for my conversions to IG roughriders.

They fit well with My praetorian guard theme.

[wilkinson73]

I have some rough rider bits I could sell you. They are third party bits to make 5 Mordian type RR. No horses pm me if interested. lance stuff as well.