You may be simply rubbing the inner fender wells (the wheel side of the passenger kick panels).
You might have to pull the wheels to see where they're rubbing, or get it up on ramps and peek up in there. Most likely, you'll see a slightly curved, vertical rub mark on the inner fender where the tire hits.
The cure is to re-set the stops on your pitman arm (that moosey big arm going off the bottom of the steering box). There should be a 12mm bolt-like stop to limit arm travel in each direction. Simply turn them in a bit until the wheel rubbing stops.
This is pretty common in Speedsters. No biggie........