There were a couple people here who had prints and tried to do something with them, but they are long gone as far as I know. I would suggest trying some 35mm collecting forums, and also not advertising that you will be transferring them to video. Any print you will get your hands on will be extremely rough though, so make no illusions about what you are up against. It will take a long time to clean it, unless you have access to proprietary software and hardware like Lowry. If the print is good, be prepared to spend four figures on it also. This sort of thing is probably the "greyest" area of home video collecting, as it is clearly illegal, so I'm not even sure how open you want to be about posting it on this forum.

If you have professional frame-by-frame scanners, or even a regular pro telecine, that will get HD results, you might want to consider a 16mm print. There are a few low-fade LPP prints from the 1980s out there that, when cleaned up, would get you better-than-DVD level of detail in an HD scan. More importantly though, it's much cheaper and easier to find (eBay), and slightly less "illegal" because 16mm isn't seen as a real piracy threat.