The aircraft was to be powered by a surplus Rolls-Royce Merlin 500 fitted with a chin radiator from an Avro 685 York and hence the remark by Chris Pinn:
"Anybody who knows the Fairey Firefly also knows that they either have one radiator under the nose or in the leading edge of each wing. They never had both - except for this aircraft! Actually if you look carefully you can see that the wing radiators have been faired over. The normally blanked over area between the front and rear cockpits has been modified and extra windows fitted."
"If you didn't notice the leading edge radiators you'd almost think it was a Mk.I or Mk.III."
"The original leading edge radiators were faired over and Bob Diemert hammered out a hand-made cowling to cover the new radiator location under the chin. The entire length of the fuselage was gutted and a single bench seat installed. Even this was different. Bob built it so that you straddled the seat and then slid a seat-back into place in tubes riveted to the bench sides."


