Complex sentence: The dashboard itself was thinned out and leather was replaced by lightweight Alcantara, the glove box was replaced, and holes here incorporated to allow the fitment of a bolt-in roll cage for safety.
Split into simpler sentences: The dashboard itself was thinned out and leather was replaced by lightweight alcantara. The glove box was replaced, and holes here incorporated to allow the fitment of a bolt-in roll cage for safety.