Not the exact same engine per se, but the next iteration of it. I don't have a 4.8is so I can't tell you anything exact about reliability (I'm sure others will chime in) but if you keep your cars that long you should get a new car with a full warranty so then you can maintain it well and it will last you to 200,000 miles. Buying used and you might end up paying for someone else's poor judgment in maintenance.