Although the 70 Series is still somewhat rare in the U.S., I'm living proof that they can be had with a little homework.
Here is further evidence that the numbers are slowly increasing in the U.S.
https://forum.ih8mud.com/threads/u-s-70s-registration.804314/
Here is further evidence that the numbers are slowly increasing in the U.S.
https://forum.ih8mud.com/threads/u-s-70s-registration.804314/