Good Afternoon! I am checking on a Fantom Thunder belt, model F12053 00, serial number 103963, style GF9 - see below that you say that your Fantom belts fit both the Fantom Thunder and the Fantom Twister, but since this vacuum is so old (but works so well!!), wanted to make sure your belts are what I need. Thank you for your response - Kathe [email protected]