Ridetech vs TCI

[itsals1]

I want to build my 67' camaro similar to the 48 hour camaro with a few changes. How do you feel about the Airbar (link) rear suspension compares with TCI's torque arm. I would use Ridetech coilovers no matter what. Will need new 9" or 12 bolt as the stock 10 bolt is not going to hold up.
Lets here your opinions!

Travis