Box and No Box

I take it that worked well ? I'm also going to run a 2 step. I just have non power a body disc brakes with the 76 calipers and 11 inch drums on the dana
It did work pretty good. I could only bring it up to about 2500 before overpowering the brakes. Before that I had the two step hooked to my brake light switch with a toggle to turn it on or off.