Converting a Peugeot van-bus to CAN-bus

Hello, I'm new here and I hope I didn't make a mistake with the category right away.

Okay, regarding my problem: I drive a Peugeot 206 from 2004, and I've already replaced the original radio with a Peugeot RT3 (Van-bus). However, since I plan to keep the car for a few more years, I would like to replace the RT3 with an RT4/RT6/RNEG. Unfortunately, the problem lies in the difference between Van-bus and CAN-bus.
Therefore, my question is: Is there a way to convert the van's bus system to a CAN bus signal, or to make the radio believe it is connected via CAN bus, even though it is receiving data from the van's bus?

Hoping for help and no overly harsh comments.
Best regards.

Hello,

I think this will be quite challenging because there are likely to be few ready-made components available for the VAN bus, unlike what exists for the CAN bus. While the driver circuitry is the same, a different protocol is being transmitted. And that's where I think it will be difficult, because, for example, with an Arduino, a ready-made library is often included in the program code to decode the CAN protocol.

Here is some interesting information about the VAN bus.
http://graham.auld.me.uk/projects/vanbus/lineprotocol.html

It's probably better to rely on something already established when it comes to setting up your radio.

Best regards,
Werner.