Last rover build for APM 2.6 board

Hey, I have an old APM 2.6 board and I want to use it for a rover.

The last copter build that fits on this board is v3.2.1.

What is the last rover build that fits on APM 2.6? Should i buy a pixhawk?

Thank you

The best would be to buy a pixhawk or one of the other supported modern boards.
Ardurover 2.5.1 beta should be the last APM 2.6 version.