This one's a bit of a stretch on the Lockheed Ventura [end bad pun]. The Howard 350 Super Ventura.
Dee Howard was a respected inventor and legendary in the aviation industry known for his many creative accomplishments. Dee had over forty US and foreign patents issued in his name. Dee’s aviation career spanned the birth and development of business aircraft in the post-World War II era. He is internationally recognized and honored for advancing the state of the art in business aircraft with numerous performance improvements, such as jet engine thrust reversers and refinements in aircraft flight characteristics.
At the age of twenty-seven, with a wife and two young children, Dee resigned his secure position with Slick Airways and founded his first company, Howard Aero, Inc., starting with a small one-room building on the ramp at San Antonio Municipal Airport and shortly thereafter hired his first employee, Ed Swearingen, and later hired Bill Lear, Jr.
Howard Aero’s first major program was to extensively modify and remanufacture the Lockheed Ventura medium bomber into a high performance long range business aircraft that became the Howard Super Ventura. Howard acquired 35 former RCAF and 21 former SAAF aircraft, the airframes were extensively modified, including a 4 ft stretch of the fuselage. All systems were of entirely new design and manufacture, large windows were fitted in the fuselage sides, the bomb bay was converted to baggage compartments, and a stronger main landing gear (taken from the Lockheed PV-2 Harpoon) was fitted.
Powered by two 2,500 hp Pratt & Whitney R-2800 CB-16 eighteen-cylinder two-row air-cooled radial engines driving four-bladed propellers, or two 2,000 hp R-2800-83AM10s with three-bladed propellers, the performance of the Super Ventura far exceeded that of the original PV-1. The first completed Super Ventura (N5390N) made its first flight on May 5, 1955, and the first production aircraft was delivered in the autumn of the same year to Plymouth Oil Company of Pittsburgh, Pennsylvania.
Get it here:
Murph's Models - Lockheed PV-1 Ventura