Can this be Streetable?

It's all in the tuning. If you see a tunnel ram that bogs, I'll guarantee you the carbs are either too big or improperly tuned. Cold starts can be a bear, especially in colder climates and it takes a little extra work to get the tuning just right, but to say they aren't streetable is just wrong. Just do a search for "tuning a tunnel ram for the street", there are tons of sites and videos to help you out.