this swap is difficult from what I hear. Tho possible, you'd need alot of fabricating to make it work. You'd have to make new motor mounts because the M44 mounts and M50 mounts are different. Where as the M50 and S50 share the same motor mount locations this is a truely easy swap. Plus you'd need various other parts to make the M44 to M50 work. People say it is more feasible to go forced induction than swap