GM LS style ECT sensor as used by many aftermarket efi systems such as Fueltech, Holley, MS3, AEM, Big Stuff 3, Fast, etc. Also works with factory LS wiring harness. These have specific thread and washer for LS cylinder heads.
Mac 3 Port Air Valve
IAT Sensor for most aftermarket EFI systems
Billet Mount for 2.5lb Co2 Bottle