There are some great threads on here about setting up your Cal Tracs. I run them on my Cuda, you will not be disappointed. I am just north of 600HP and I literally think they are the reason my 8-3/4 spooled 433s is still alive. Everybody flamed me when I was building it for the 8-3/4 but for the price I figured I would run it till it shelled then go Dana. Buddy was fire sale due to a domestic dispute.