N451D is 44-73260 which served with 165th FS KY ANG before sold and adopting civil reg. N5075K. Sold to Cavalier and rebuilt, it became N451D and was used as demonstrator before being sold to TNI-AU (Indonesian AF) as F-360. Crashed on Java 1975; remains being sold to the USA as spares-source to various rebuild-projects.
N451D was a Cavalier conversion of P-51D s/n 44-73260, including 'tuna' tanks, custom interior and paint job, but not the taller tail which most of the modified aircraft had. Before conversion it had been registered N5075K for a time, and after conversion it wound up with the Indonesian Air Force as F-360, but was crashed on Java. Remains of this aircraft were reportedly recovered by the late Stephen Johnson, along with most of the remnants of the Indonesian's Mustang force in the late '70s.
T J Johansen
N451D This was, I believe a demonstrator for Cavalier until it was sold to the Indonesian Air Force where it apparently crashed in the mid-70's.
This Cavalier 2000 aircraft, won "Best of Show: Single-engine Aircraft" at the Reading, PA airshow 1960. At the time, it was the demonstrator aircraft for Trans-Florida Aviation, Inc. . The pilot is W. P. Brownell, pax is a secretary from Trans-Fla. Photo by D.B. Lindsay.