Yup, I agree with joe. I would go 1” or larger. PST sells 1.03” torsion bars, they also have a FABO member discount if you call them up. A lot of people here l run them and are happy with them.
As a side note though, you’ll also want to run them with good shocks. Bilstein RCD’s or similar. If you run 1” or larger bars with KYB’s your ride quality will suffer.
