Torsion bars for better handling; your experience?

I wish I could help, "all" my car is used/ CL stuff

I bought a parts car and it just happened to have huge aftermarket bars I don't know what they are, whatever numbers did not come up anywhere

I rebuilt my rear springs by combining the longest leafs from two cars using same no. of leafs plus 1. "It just happened" to come out at a great height, and I would not want it any stiffer. The improvement in handling, even with so so tires was dramatic to say the least