You will need a Beolink 1000 and an external sensor. The sensor is much the same as a MCL sensor but will need wiring to a DIN plug.
I would actually make sure the VX5000 works first and then strongly suggest getting a different TV. An LX2502/2802 would give you a far better picture and sound and are practically given away these days. These will stop you needing the sensor and will possibly be cheaper than finding one!! An MX5000 would also suffice if you prefer this style.