My focus is really lacking power and I noticed a new slight whine from (i think) the turbo. Not sure if its dirty or its on its way out but considering the type of damage you would get from a blown turbo I decided to purchase a refurbished unit from ebay for about 300 quid. Not wanting to spend much more on this car (repair bills in the last couple of years have run into thousands already), I am thinking of doing the job myself with my buddy helping me. Haynes manual put the job at 4 stars which I honestly have never done but have found 3 stars jobs pretty easy. I also have a good set of tools and pit in my garage. None the less it is still something that neither me or my friend have ever done - do you think we should do it or is it too risky?
Also apart from the gaskets, what else needs to be changed? The oil feed pipe was replaced a year ago since I decided it was a good practice to do it while I had my DPF being removed.