Hello RaddoRene,
I urge you to peruse the Engine Tuning forum - there are plenty of 'stickied' threads for you to feast your eyes on.
Don't underestimate the size of the job - or the cost!
For some inspiration/motivation, BradVR6 turbocharged his C' a few years back:
https://www.vr6oc.com/forum/forums/topic/36392-brads-corrado-vr-next-on-the-listturbo-conversion-d/?do=findComment&comment=384316/