This is a scale model of the Gee Bee R2 Golden Age Air Racer is 1/48 scale, I have printed is this scale and overall its an easy print, but some pieces do get very small. You could also scale it up by 1.5 to get a 1/32 scale model, or by 2 to get a 1/24 scale model.
It has many details and it looks great once printed. It has been carefully designed to be a replica of the real one. It would make a great show of model.
Updated 12 05 17: All the .stl files have been rotated for easy print.