If you want to return your phone to stock, check the guide that is linked in my sig.
If you want to flash N9005 roms on your variant, again check the guide in my sig.
If you want roms made specifically for your variant i dont think there any roms for N900W8, AFAIK they either flash N9005 roms or N900T.
PS- Just a tip for next time, questions go in the Q&A section. Dev section isnt for questions..