Assassin Traction Device?

So, I've been looking for a cheap way to beef up the rear suspension in my 74 Swinger until I can later afford to back half it. I found this Assassin traction device and for the money it looks legit. I was just wondering if anyone is running em or knows anyone who's running em. Any input is greatly appreciated. Thanks.

what makes you think you need to backhalf it or is that just the look and hassle you want?

caltracts mono leafs, shocks, and caltrac bar and your done...