That's the only "mid-arm" bolt on kit out there. Of course, for taller lifts "bolt-on", including the RE 5.5 kit, has disadvantages, usually in the clearance department.
There are two major flaws with this kit: 1) the arms use heims, which is fine for a queen, but are prone to wear and noise for a daily driver, and 2) the trackbar mount relocation to the stock stabilizer mount plus a 3" drop pitman is garbage.
The RE 5.5 is flawed as well. Dropping frame mounts vs. raising axle mounts to normalize link angles is never desirable...but the big money is in marketing bolt-on stuff to the masses, so don't expect that to change.
Nay