Anybody ever use Just-Suspension 1.0 torsion bars

I am about ready to completely rebuild the front end of my 70 dart with 73 and newer brakes and all new suspension parts. It is a /6 right now but will be a 340 in the near future. I want to upgrade the torsion bars while I have everything apart. I am thinking about buying a set of 1.0 torsion bars from Just-Suspension. They are on sale for $179. Any input on these bars?