So i was wanting to test Lame from 3.90.3 to 3.97 but i google is just being useless.
For linux: https://github.com/lazka/mutagen-mp3-test-vector/tree/master/encoders
If you are missing any for Windows, I think I have most, if not all. ;)
There are also some at oldversion.com.
Thanks for the links.