I used Summit's kit on my Duster, had enough length for everything I did with the relocation, battery cut-off and solenoids. I just had to buy a couple extra 1 gauge cable ends for the cut-off and a couple of starter cables to go from the starter to the starter switch and the starter switch to the solenoid.
http://www.summitracing.com/parts/sum-g1231-k/overview/