Help needed: advise on upgrading D Boy Scar L gearbox

[LT.maddog]

Hi all,
I've had my scar l a while now and am considering upgrading the gearbox to an Ares Amoeba EFCS ECU - Rear Wired, looking for advise as to whether it would fit my dboy scar and what people think of this set up??? Or any other ideas of possible upgrades, I mainly go to cqb and milsim.
Any advise gratefully received.
Cheers