Fire PSU Board = D-8345 Rev B
Taxi - PSU Board = D-12246
Mousin' Around - PSU Board = D-12246
Whirlwind - PSU Board = D-12246
I wouldn't swap Fire with them...
Just take voltage measurements on his Fire PSU. That will tell you if it needs a new Caps or not. Most of the time it's J1 that needs attention...