This 2.4-liter Porsche flat-six engine, originally built for a US-market 1972 911T, features Bosch mechanical fuel injection and was factory rated at 140 horsepower. The seller acquired it in 2020, and a comprehensive top-end rebuild was completed in 2021, including machining cylinder heads and replacing valves, guides, and piston rings. Invoices detailing the refurbishment are available.