So I saw some Rubicon Unlimited coil (parts 17 in front and 58 in rear) and shock take offs for sale for 70 bucks. Less than 1k miles. My question is what would that do to my stock Sport Unlimited and would i need the shocks or just the coils? I wouldnt need to upgrade anything else to throw these on would I? Good buy? I had planned on doing 2.5 inch in the future when I can afford it but I could afford $70 now and then wait a bit for the next lift if the rubi stuff helps.