1 x Aerodyne sleeper roof to suit Tamiya's King/Grand hauler 1/14 scale trucks. 

1 x roof air diffuser also included 

 may require a bit of trimming but i doubt it filling and or glue etc to fit 3d printed in white material Can be glued in place and filled to give it a custom fresh factory look

you can see my own personalised slightly taller version i made fitted to my fully 3d printed 6wd  hauler