I don't know the specifics, as I was given it half built, from what i was told though it IS supposed to be for an electric motor
The wing size is aprox 177cm
The body size is aprox 125cm from the nose to the end of the tail.
That 'cheeky' nose is what makes me think it's supposed to be glow, as that's a very common way for aircraft to have some semblance of a cowl yet allow easy access to the engine for startup, servicing, adjustments, and for cooling/exhaust clearance. Electric planes typically don't need any of that and so they'd get a full cowl instead. 'Course an E-motor will fly it just fine, but you might have to modify the fuse a bit to make the battery fit properly. And it's gonna need a
big battery to feed the big motor you'll need.
I'm a bit hazy on exactly what to use, given I'm a nitro nut, but if I were to go electric on a plane that size I'd look into something in the 40-40 to 40-60 size.
This one would do the trick. Constant output for it is 1100 watts, which is right about the full throttle output of a glow engine typically used in a craft of that size. You'll want a suitable ESC for it...I'd use an 80a on it instead of the 60a that the motor calls for just to give you some headroom as working an ESC at its max capacity will not lead to a long and happy life for said ESC...an 11x5 prop(Your plane is only 3 or 4 inches wider in wingspan than my balsa plane and it calls for an 11x5 as well), and for batteries I'd dip into the car side of things and pick up a pair of softcase 3s 50c 5000mAh packs alongside a series connector to give you 6s at the ESC. Doing this for your flight battery also makes it easier to find room for the packs in there, as car batteries tend to be much more standardized in sizing and you can place each pack somewhere different as the airframe necessitates.
That'd get it flying well enough I think. I welcome someone far more experienced with brushless aircraft than I to correct me, however, if I messed something up here.