Turbo convent Jetta, how
 

Hi
I have some plans to buy a VW Jetta, around -90,91
And i have some serious plans to turbo convent it, så now i would be grateful if someone could give a little help :)
I have thoughts of taking parts from a saab ng900, or maybe you have some other tips?
What parts do i need more than turbo, ic and stuffs?

/ Jonas