Peace, mercy, and blessings of God be upon you. I have brand new LT4 engine heads. They have titanium valves. They have double gaskets (new). They fit the Camaro ZL1 and SS. They fit the Corvette C7. They fit the Cadillac CTS-V. They fit the Sierra and Silverado LT. They fit the Tahoe and Yukon LT. Contact: ( Phone number appears when clicking the contact button )