I am super happy about how well they fit and almost wish I'd planned to have them be operational. They are 40mm computer cooling fans and were quite reasonable.
I have the fans and skirts installed on all three Hover-Taurox. I'm finishing off the autocannons and need to deprive some terminator arms of their storm bolters.
Also, I have a few comparison shots with an actual Taurox:
What do you think?