http://www.heckflosse.nl/intro4.htm
That is a NICE resource on finnies
Good luck with the car! I think most will discourage fitting a turbo to a non-turbo car
Best reason being: turbo engines are internally strengthened and have a better lubrication system that cools the pistons. Unless you wish to rip the driveline out and fit a 617 engine/transmission in there, I think you may be stuck with the factory engine.