Welcome! Great to see another Spec build in process. You find a lot of help, and good information here. Take some time to look through the build threads, the tech area, and the Spec rules - it will be very helpful, and answer a lot of questions. If you still have questions after looking through those areas, post it up here.
Turbo parts, are for the most part, excluded, with a few exceptions, such as valve springs (which were jsut allowed this year). Look in the rules for details.
Where are you located?
How about a name?