2 x Walter Saggitta engines of 528hp. Max speed 326mph at 13,450ft. Climb 3.9min to 9,845ft, 6.8min to 16,405ft. Armament 2 x 7.9mm and 2 x 13.2mm FN-Browning.
These were calculated figures as the plane only made 11 test flights when the German invasion stopped development. This was going well but there were problems with the cooling of the rear engine.
There were other proposed verions the fastest of wich had RR Kestrel IV engines giving a maximum speed of 351mph.
Hope this helps