Apprentice Chassis:

 Chassis Var1: 89sabers-vader-mpp-apprentice-var1
Variant 2 for removable battery
 Chassis Var2: 89sabers-vader-mpp-apprentice-var2

ECO Chassis:

ECO Chassis Var1: 89sabers-mpp-variant-1-fdm-eco-chassis
ECO Chassis Var2: 89sabers-mpp-variant-2-fdm-eco-chassis