B2 AUDIO M15R the raven! Output Mosfets

Hi guys, a B2 AUDIO M15R amplifier with a burned audio section is about to arrive at my lab.

Looking at the board online, it seems to be a classic Korean one with 1 X IR2184 + 2 X TC4452 buffer and if memory serves, it should use FDA20N50 as output mosfet.

If so, I saw that the output mosfet is not very easy to find at the moment.

Has anyone tried any reliable substitutes?
Did you have to make any changes?
thank you all