Just going by the fender tag and what we can see in the photos, it's a 1966 Dart GT 2dr HT, Sept 22, 1965 build date, 273 2bbl engine, 4 speed trans, Dark Turquoise paint, black interior, bucket seats, originally had a console, a remote outside mirror, and if it actually says R4 and not a damaged R1....an AM/FM radio. Visually, the engine is a "Frankenmotor". It could be a 273, 318, 340, or 360 for all we know. We'd need some engine numbers to decipher. As mentioned, '65 4bbl valve covers, aftermarket dual plane intake, Holley carb, wrong thermostat cover, etc. Other nits include a missing W/S washer pump and reservoir, wrong alternator pulley, and bypassed heater core...probably a leaker.