 Would you make a change? No, I'm not going to touch it. I'm just going to leave it and drive it. It's going to save me a little bit of fuel economy, but I'm not going to really worry about it. The only time I might change it would be if I decided I want to do something different with it and put a different camshaft in it and maybe tune it so it has a little different idle and sounds a little different, maybe a little more power, just something different, and I'm going to put a regular cam in it with regular lifters at that point. Then I know I'm going to drive that thing for another four years. I had an 07 Avalanche.