[camarojoe]

If it runs good, I wouldn't replace the engine...even if you don't keep it for the 50 years it will likely take until it becomes a "numbers matching" classic, it will still throw up a red flag to a buyer that the engine is not original in such a low milage car...I know I would be suspicious if i was looking at a 2000 camaro with 30k miles and was told it was on its second engine. Buy an extra quart of oil every 3000 miles and forget about it. JMO.