This is a list of optional rebuilds for canon mech designs

3050

Dervish, 55 tons, speed 5

Replace LT LRM-10, Ammo, and Case with ER-LLaser and ECM
replace LT LRM10, 3*Ammo with ER-LLaser, DHS, and MPL,
replace arm SSrm-3 with 3 SLasers, replace FF with TSM

3055

Hitman, 30 tons, speed 7

Replace RT Probe with ECM,
replace LT ECM with C3I,
replace LRM5, Ammo and Artemis with 3 medium laser

3058