Solid State replacement for the Phillips digital tape cassette recorder LDB4501

I am looking for a freelancer to create a solid state replacement for the Phillips digital cassette recorder LDB4501. The budget for this project is over $500 and I have detailed specifications for the solid state replacement that need to be met. Additionally, the solid state replacement must be compatible with specific components/designs. I am willing to work with a freelancer to ensure that the project meets all of my specifications and is compatible with the existing designs/components. Please reach out if you believe you have the experience necessary to complete this project.. The product is emulating the original Phillips LDB4501 to various host systems. The digital blocks that the original recorder stores on tape, should be stored on an SD card. The candidate should be familiar with the Arduino SPI SD card interface. The Arduino accepts phase encoded serial data to be written to the SD card, and transmits read data serially. The receive and transmit lines can be general purpose Arduino parallel interface signals..
I have only chosen the Arduino because of it's embedded SD interface, There may be other other products that are better suited,