Hmmm...These look pretty much identical to the JBA UCA's. I might have to make a phone call to RRO later and find out more info as I was close to pulling the trigger on the JBA's.

As for the adjustable rear track bar, I'd recommend Rusty's over the RRO. Rusty's is beefier and totally adjustable from 1-6 inches of lift. It also had a grease zerk on the adjustable end and that end is more Heavy Duty.