That was just the proof-of-concept prototype. The proposed service aircraft was the Vought XF5U-1. It was cancelled and destroyed before first flight.
(What looks like intakes for twin turbine engines are in fact cooling intakes for the dual P&W R2000 radial engines.)
Website for more pics of the restoration (plus other restorations by the same group) can be found
here.
Interesting that they refer to the Corsair as an F4U-X. This would seem to confirm that the basis for the restoration is a mix of F4U-1 and F4U-4 parts.