How high were you reving it? Hitting the track...what do you mean by that?
On the first 10k on my cruze i lost a manual transmission. (The bearing whine) On my replacement i didn't mess around and swapped the trans fluid with ams oil. Still runs great. @ 55K miles now.
I blew my second turbo by hitting the track 5 days in a row, by the 5th day i could hear a whine when it was spooled. A week later it failed on my way to work. Stock turbo is amazingly reliable as long as you let it rest between pulls.
Im very confident in the engine *knock on wood* We'll see how it holds up to the bigger turbo.