Using PIC Microcontroller

[StuyoP]

I know it is far fetched, but worth asking if somebody has done it.
As this great project is using SPI in its core I presume utilizing a PIC Microcontroller would seem feasible. I have some experience with configuring PIC 16F690 to use as Fanatec shifter emulator and presume for here it would be also applicable. This PIC can be powered with 3.3V, has 18 I/O ports, supports SPI and works at 20MHz.
Issue is I am pretty bad as developer and am wondering if somebody worked already on that. I can program the pic to the part that it is SPI Slave and which ports are used for what kind of communication, but the rest is to splice the actual serial communication code from here.