 would involve a dramatic redesign.Three surplus Mustang I airframes were allotted by the Ministry of Aircraft Production (MAP) and were dismantled in order to provide the major components for a mid-amidships installation of the more powerful Griffon engine, somewhat like the V-1710 Allison installation in both the American Bell P-39 Airacobra and Bell P-63 Kingcobra.The project culminated in a mock-up, albeit with a Merlin 61 temporarily installed, serialed as "AL960", that was examined by representatives from the Ministry in 1944, but was not given priority status.