Is Old World Beastmen the same scale as 40k?

I'm thinking up some kitbashing ideas, and was wondering if Old World is the same scale as 40k?

Specifically, I'd love to use some of the models from the Beastmen range to convert. Would the Gors or Bestigors look out of place as Fellgor Ravagers? Would the Minotaur Herd be about the same size as Mutilators or Chaos Spawn?