length is 37.5, 48 splined 1.75 ended with a 1.50 diameter bar(my tires and headlocks are heavy) and the arm's are the 613-5-1. Length of the control arm is determined by how much travel you have.
I planned a sway bar into my build, with that said, I run a slightly lighter spring so my ride is smoother on the washboards and with coil overs, I actually have options for spring rates and also have changed valve stack in the shocks to adjust my ride.
Is it worth it, depends how much it will be driven on-road and if you like hauling ass on fire roads getting to the trail...