Just had a full engine replacement after they diagnosed low oil flow to one or more lifters and a valve seat issue causing a lazy idle. I was quoted around $900 to open up the top end to see what was going on in there. Then, if it needed a valve job, it would've been around $2500 for all the work involved, machine shop service, etc. After pricing a full GM replacement engine with a 3 year 100k mile warranty at exactly that price, I decided to just go that route in stead of going down the rabbit hole with the valves, and seeing how deep it was. At 150k on the engine, there could've very well been worn piston rings, etc, in the bottom end that would've made a valve job a moot point. So, they sourced the crate engine I was interested in that came with a 3 year 100k mile warranty from GM and followed all the necessary protocol in order to ensure the warranty stays intact. They also instructed me on how to maintain a paper trail to document everything done to the engine within those three years. That way, if anything happens to the engine and it needs replaced, I can prove that it wasn't negligence that caused the issue. Also, while they had everything apart they replaced the water pump, cleaned and serviced all of the sensors and injectors, inspected everything, and took care of a transmission leak (bad seal at the torque converter). They even found that the upper intake manifold was cracked from my last mechanic's work and replaced that. They were courteous and answered all of my questions throughout the process, and the whole job only took a week. It could've been shorter, but they wanted to take their time and make sure that nothing was overlooked. The best part was that even though it took longer, meaning there were more labor hours applied, the price still came in under budget. I highly recommend these guys for their professionalism and workmanship, and I plan to continue using them as my mechanics for years to come.