stiff clutch pedal help

just bought a 1973 340 duster #s matching 4 speed, clutch pedal is stiff as heck, not fun driving in traffic. guy said I should put a center force set up in, that would lighten up the pedal. I need a real answer here as I am getting different opinions from different shops, one said it must be a comp clutch and I should get a ram set up, that a center force is a ladies clutch, one says maybe the pedal itself can be lightened up. want something that feels like the stock pedal, as this thing is a bear to drive, any thoughts out there ? thanks much