Hi, My dad has an 02 avalanche and wants to replace the torsion bars. The driverside is sagging. He cranked that side up but it is still low. After I made all the obvious comments about his weight, I told him that I would help him find a set. Does anyone know who sells aftermarket torsion bars? I had a set on my 95 silverado but can not figure out what brand they were. He is a GM employee so he can buy oem from the parts warehouse at or below dealer cost. But, if we can find some aftermarket at a good price then we will go with those. Thanks