Marauder's MM94 Chaos Centaurs set was undocumented in the catalogues and each model consisted of two parts, a metal torso and plastic horse body. The horse body came from Citadel's plastic horses.
MM94-01Chaos Centaur Lord(blister)
MM94-01Chaos Centaur Lord
MM94-02Chaos Centaur
Centaur Body(example citadel horse)