The F-104 was one of the most dramatic looking aircraft of its day. It was often called 'the missile with a man in it' because of its needle-like fuselage and high speed. The F-104 went into service amidst a flood of publicity and it achieved many speed and altitude records. Consequently, the F-104 Starfighter was a very popular plastic model kit subject during the late 1950s and early 1960s. By the time Thunderbirds went into production in 1964, many different plastic model kits of the Starfighter were on the market in a variety of 'fit the box' sizes.
The F-104's 'futuristic' lines made it one of the most frequently used commercial plastic model kit types utilized by Derek Meddings' team of modelmakers during the production of Thunderbirds. It looks as if at least two or possibly three different F-104 kits were used by the Thunderbirds effects team. Most likely, these were the kits produced by Monogram, Revell, and Airfix. However, Hawk, Comet, and Aurora also had F-104 kits available around this time which may have been put to use on Thunderbirds.
Generally, the Thunderbirds model makers used the Starfighter's fuselage in conjunction with wings, stabilizers, and other parts robbed from other kits. Occasionally, minor parts from F-104 kits were used to detail larger miniatures. The following is as complete an accounting as I can come up with of all the miniature vehicles seen in Thunderbirds and other Anderson productions that used F-104 Starfighter model kit parts.