340 A Body Torsion Bars

What is the diameter of the factory stock 340 A body torsion bars? I think they are either .870 or .890, but I am not certain. I am going to use those, as I don't want something terribly stiff because I plan on running sway bars front and rear. Thanks.

.870 are stock 340 bars.

I have front and rear pst sway bars and .870 t-bars; the ride is not really that stiff. I'm actually going to eventually get new rear springs and larger t-bars