Hi Chris and welcome. Is this the Italian Harley made by AMF? In which case I have 75% of one in my garage which my Dad gave to my son over 10 years ago. My lad took it to bits (he was only 15 at the time) spread the bits into various boxes around the garage and forgot about it. It's up there on my to-do list.
As for cafe racing it, I think you are on an uphill struggle. I'm not saying it can't be done, but the frame and wheels don't lend themselves to a cafe racer style bike without some serious modifying.
Having said that, never say die. Post some pictures and let the bods on here give you the benefit fo their cumulative wisdom and knowledge.
Good luck with your build.