Welcome to the site. There can be a pretty steep learning curve here. For starters it's Yenko with a "k".
You'll find it can be tricky building a socailly acceptable clone. I would recommend you build the car the way you want to and not worry about anything else. I personally feel you could just try and keep it as a "period build" using all the parts which would be correct to a certain time-line. Say speed parts form 1968-1970 for example. it doesn't have to be a Yenko Clone to be cool!
Got any pics of your project?