When sourcing a Cat 320, you must prioritize the engine performance and hydraulic efficiency. Ensure the unit features the Cat C4.4 or C7.1 engine (depending on the specific sub-series like 320 GC or 320 Next Gen) that meets Tier 4 Final or Stage V emission standards for regulated markets. Key metrics include a net power of approximately 117-129 kW, a max digging depth of around 6,700mm, and an operating weight of roughly 22,000kg. For 'Next Gen' models, verify the presence of integrated Cat Connect Technology, such as 2D Grade, Assist, and Payload systems, which can improve operating efficiency by up to 45%.