I believe the rackets he is referring to are mounted onto the knuckle IIRC. And yes this can fix your issue and will not need a drop pitman arm for a standard YJ spring soa conversion, however if you have lift springs you are using you will be adding that amount back into the equation. IMHO you would be better off using a drop pitman until such time as you can upgrade your axles to 44's with high steering or at least do a Chevy outer conversion to your existing axle.
I assume like all of us that do a SOA we end up using larger tires
, once you do this your axle will be marginal at strength and may not even last depending on your right foot. When going to larger tires you will start throwing money at an axle that really isn't made for the weight to torque ratio. You can use a drop pitman arm and if you set up your axle correctly and have good front end parts you should not really experience DW. I had a 10" lifted cj with 38's and a drop pitman arm and no DW
it is all in how you set up your angles of the front axle. Remember the 5-7 degrees you would normally run on a stock axle is changed and you can get by with a bit less especially if using larger tires.
The mounts you are looking at will need a different drag link and possibly a new tie rod IIRC and you will still have the strength issue. Many of us used DP arms with success long before those kits came out.