All the Special Car speakers are different from the other ESB Car Audio speakers. Not different for sizes and dimensions only. Different because of the technology used to match limited spaces and low power factory amplifiers. They have high grade neodymium magnets, lighter cones, lighter, rigid aluminum baskets, and a new voice coil complex. Each model has a dedicated adapter to match exactly the space requirement and mounting holes. All the speaker connections are plug and play with the original factory wires. Then each speaker is equalized for the scecific car's environment by a individually designed crossover.