It depends on how much money you have to blow? I made everything based on info from this site for around $300. Is it worth $1300 to me? Heck no. I paid $600 for my rig! My MJ is off road only, I wouldn't put long arms on my daily driver but that's just my opinion.
Anyway, there are many benefits to long arms, over conventional short arm systems. Besides articulation benefits, it corrects the steep angle of the LCAs on a lifted vehicle which causes death wobble and other handling, steering and ride problems.