It is a lot of work. But could be very much worth it. I had a 1967 Firebird 400 HO parts car. It had both traction arms. My buddy swapped the entire mess onto his 1968 Firebird 400 hard top. We adapted it all to an 8.5 second gen rear with multi leafs. With the 068 cam and a Muncie he was able to pop the front wheels off the ground. Those traction bars just planted the rear solidly.

I kept that rear and now it is in my 1968 convertible project. I am trying to combine the traction bar floor supports with the roll bar supports. It looks easy but is turning out to be a huge PITA. But if you are doing stuff like rockers, the traction bar supports should be no big deal.