Please help or advise!!! Turbo has been making noises and going into limp mode up hills for about 500 miles. This morning it started a scraping noise and now smoking like anything. Nursed it home and put it back in the garage, I`ve worked out it`s now knackered!!. I`m forced into buying a second hand turbo due to financial reasons as I have a good mechanic to do the job. My question is do I need a part number? are there different variations of turbo fitted? Any advice would be greatly recieved. Thanks guys