I haven't been on for a few years. I completely put down the hobby the last couple years. But I'm getting back into it recently and I accidentally blew up a 60A EZRUN by cross polarizing the battery plug. .
I bought a cheaper refurbished 35A model to replace it. I was wondering If removing the capacitors off the 60A ESC battery leads and adding it to the 35A will offer benefits. *If it's even compatible

Thanks

No bennefits. the capacitors are not there for the performance but to filter out high frequencies which can be harmfull for the FET's within the ESC.

Even if it was compatible and was beneficial, you probably blew the capacitor too when you reversed the polarity. Don't try salvaging it.