To begin with, there were already few types of shortwave radios available, and even fewer that were suitable for use in cars. Besides the FT-891 and IC-7100, there really weren't many other options.
Other options:
- Although the design allows for panel separation, in practice, you will need to DIY some accessories: G90S/G90N
- The following older radios have been discontinued: FT-817, FT-818, FT-857
- Although not a chassis, it's small in size and doesn't interfere with the car's interior: IC-705, X6100, X6200