− Decrease quantity for Fabricated Aluminum Valve Cover, Billet Rail, 3" Tall, Brodix PB-5000 Style Cylinder Heads. 3" Tall for greater hood clearance, Billet Rail Quantity + Increase quantity for Fabricated Aluminum Valve Cover, Billet Rail, 3" Tall, Brodix PB-5000 Style Cylinder Heads. 3" Tall for greater hood clearance, Billet Rail Add to cart