I think if u use AM pcb on 02 or AWD for fet upgrade the difference is the on board fet 02 is 3003 and AWD is 3010
and the 3010 is around same as 4562....so if u use AWD for fet upgrade I prefer u stack 2 level 4562 is ok for fast motor.
and for 02 pcb.... u need to remove all all board cheap fet and stack 3 level 4562 for fast motor. and 02 pcb u need exchange the red and black wire for servo motor or else servo will not work for AWD....