I am recommissioning an SPX 30 autopilot with ST70 controller after updating the AP software. The boat displaces approximately 36000 pounds, has a Simrad RPU160 reversible pump (160-550cc) being used with a Seastar HC5319 cylinder (226.4cc). Would you recommend specifying drive type 1 (80-230cc) or drive type 2 (230-350cc) for this boat?
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