If its a college course, it's definitely NOT the equivalent of Honors Physics, you know that.
Physics C actually does not cover too much deeper stuff than Physics B CONCEPTUALLY. The main difference is in the mathematics and calculations. In fact, Physics C only covers Mechanics and Electricity/Magnetism. Physics B goes into Thermodynamics, Optics/Wave Motion, Fluids, etc as well as Mechanics and E/M. Your class is calculus based, so it will probably be good for Physics C. However, you may also be studying Waves, Thermo, and Fluids with a calculus base. If so, the class gives you the conceptual basis for Physics B (and thus, C) and the mathematics for C (and thus, B). You have a great deal.