This is a E3D Buggy that has been updated with many hot rod mods.  It has been chopped, channeled, pancaked, shaved and slammed.  No supports are required and you can use minimal infill (10% is fine).

This is based on the E3D Buggy model (https://www.printables.com/model/275117-e3dbuggy-a-3d-printer-stress-test).

Enjoy!