Engine housing for the exhausts + exhaust plugs

will require some gluing skills.

I used baking soda and super Glue.

5mm LED Housing I used : https://www.thingiverse.com/thing:2346074

3v Button Cell enclosure I used: https://www.thingiverse.com/thing:866780
yes the LED's work, the light didnt get picked up by the camera.