Hello All, I found and bought a 1964 mustang K code coupe all original, original owner K code, guardsman blue, it has been sitting in a garage for 50 years doing a partial restoration on all mechanical upgrading the brakes and engine and all other components to make it totally drivable. Body is straight but has total patena paint. Interior has been totally redone to original colors but everything is new to showroom condition. what do you think should I keep exterior all original patina or paint to look new?