Savage 99 scope mounts are not weaver?

[Hectocotylus]

I recently acquired this savage 99 takedown in 300 savage. It already had holes drilled and tapped in it but they do not run lengthwise on the gun like weaver mounts do. Any ideas on where I can get mounts for this? I have heard of the Stith mounts? But don't really know what I should do. Any experience is helpful http://tapatalk.imageshack.com/v2/14/10/09/536cccdf5113ef482ede10f1f1ed1d93.jpg

[J.Baker]

Can't say I've ever seen anything like that before. Those back two don't even look like they're in line with each other.