The only ACW with ECM, ACW-A (located in LST), does not have ballistics, and neither do any of it's fellow omnipod variants. The only ACW with ballistics, the ACW-BK, does not have ECM, and is not an omnimech. If you desire the LBX-20 more than ECM on the ACW chassis, my build for the BK is this:
LBX-20 + 4xERSL + XL280
https://mwo.smurfy-n...073bc43bde1861d
(please note that I have no experience in FP, and only play QP, so I have no idea how well this works with competent teams)
If you can't afford the 3k MC for the Blood Kit, you can also go for an SRM boat build like this:
5xSRM2 + 4x SRM4 + XL300
https://mwo.smurfy-n...ee5bf594ab78b48
(sourced from
https://docs.google....t#gid=868162679)
Hope it helps.
Edited by Tangrams, 30 April 2018 - 09:19 PM.