This part is from EDBMods
cost:
1200
mass:
1.5
category:
Engine
TechRequired:
basicRocketry
engine_data:
standard
{"isp"=>{"vac"=>320.0, "atmo"=>295.0}, "propellant_ratios"=>{"LiquidFuel"=>0.9, "Oxidizer"=>1.1}, "max_thrust"=>300.0}