This is Eddie's 2015 GMC Sierra 2500HD Sema Build! He took this build to the 2018 Sema show. Installed on this truck is our Admiral 540 Train Horn Kit. The beautiful chrome Admiral is a 5 chime brass, Marine Train Horn. The chrome over brass makes this perfect for marine applications. The Horn Air 540 Air system that is paired with this horn features a 5-Gallon Air Tank that provides about 10-12 seconds of honk time. And then the Viair 400C Air Compressor is Viair's fastest compressor providing you with a quick refill rate!