Hi Anthony
I found one armature that may work for you, it's unused but all it says on the box is `Hoover early spin', it looks similar but not identical, if not I also have an early spinarinse to part out if that motor would fit, i don't know of hand if it would.
It's a shame there are not many 3301L machines out there as I have 3 armatures for those.
Email me a postal address and I'll send it off to you to try.
Mathew