Factual error: Suzy's bra is not typical of a young girl in 1965. Training bras in 1965, often manufactured by Teenform or Teencharm, were much more substantial and modest.
Factual error: The VW Bug that the belfry falls on is a later model than 1965 when the movie is set. The larger tail light with yellow on the lens seen on the VW in the movie didn't come along until 1968. The one in the movie may even be of early 70's vintage.