Used, appears to be an early version of the K6XV3+/66 or a prototype?.
Marine 143ºF 62ºC Outboards Thermostat for 75 Hp to 115 Hp V135 to V175 HP DFI 2.5L 833072002 833072003
Marine 130ºF 54ºC Outboards Thermostat Assembly for 3.0L EFI DFI 6V 200 HP 225 HP 250 HP 8M0057307 885599
Lower Unit Gasket Seal Kit 225HP 300 HP XS DFI EFI 3.0L 2.5L XS Outboard Engines
Intake/Reed Block Manifold Gasket for 3.0L 6 Cyl 200 225 250 300HP DFI EFI XS 27-804680 27-841220 27-8141951
2 Sets 27-825815 Adaptor Plate Gasket Compatible with 1995-2005 3.0L EFI DFI 200 to 300 HP
885599003 Thermostat 130°F / 54°C FIT for Boat 2.5 3.0 L DFI 200 225 250 300 HP- Outboard 885599004 8855991 8M0057307 18-3535