I bought 2nd hand an old carbon framed mountain bike and from the emblem I believe it to be Giant make.

I want to turn it into a single speed and it looks like the rear dropout and hanger are combined and replaceable. Photo attached.

Does anyone know if I could get a replacement part with a horizontal dropout setup?

Also, does any suggestions on how I could find more info on the frame? Its been repainted and I can't find any markings anywhere.
Thanks