Use the search on top with 'turbo' or "M30 turbo"
and you will find out a lot of info like this
http://www.bimmer.info/forum/showthr...ighlight=turbo
The general question you have to ask yourselves is wht kind of car you want.
And how much money you are willing to spend for such project.
If you tell us how much money you want to spent, for sure some proposals will come up.