Hi Rune,

Radiance is designed for backmounted outrunner motors. The diameter of the spinner is 82mm, so i would say you can slide a regular outrunner in through the front of the cowl, but not with the X mount installed. Anyway, if you choose to glue the cowl in place, i'm not sure you will be able to access the motor screws easily.

If you are concerned about the small cowl screws, you don't have to drill them through the side of the fuselage. There is a way to hide them inside the model (drill the holes through the firewall and cowl frame).