I have a 2007 Chevy Trailblazer with a 5.3. The DOD lifters failed and wiped the camshaft. I had a Jasper Engine many years ago so I looked up for Installers and found that Ernie's is an installer. I took it there and Ernie's installed the Jasper engine with DOD delete and I couldn't be happier. It came with a 3 year, 100,000 mile warranty on parts and labor. Now, I doubt that I will get to the 100,000 mile part of the warranty but I will be keeping this vehicle for at least 3 years or give it to one of my Grandsons. While removing the old engine, they found that my control arm bushings were falling apart. No surprise. They were the originals and the vehicle had 171,000 miles on the odometer. I gave them the go ahead and they fixed it to my satisfaction. I now have almost 175,000 miles on it and I enjoy driving it more than my 2015 Tahoe... I couldn't be happier... Do I recommend Ernie's???? Yes, I do...