Photo of a red Nissan skyline with carbon fibre bonnet. The addition of carbon fibre bonnets has a number of benefits, it looks cool, is still quite strong and helps with weight reduciton. The vents in the carbon bonnet will also help to keep the under bonnet temperatures down. You can also make out the intercooler, mounted above the radiator. It is a good idea to protect the radiator and intercooler with mesh as a stray stone can really cause problems when coolent or air pressure is lost.