Clanking on drivers side over speed bump

Working on a 65 Barracuda for my daughter and the front left side I keep hearing a clank .
I'm new to these cars and looked under and saw no springs . Read aliitle about the torsion bars and how they work . Off hand can one of you veterans explain how to to adjust the torsion bars? I would like to lower the front two inches add stiffer shocks and add torsion bars . My daughter s very competitive and needs this car to be able to hug the road . Later add front disc .any help is appreciated and Thanks Bud