My entry is just ahead of the front axle and my batteries are just ahead of the steps. I mounted the Carlisle against the frame, under the steps. That made for the shortest brake line and battery runs. The actuator footprint is about 3" x 11.5" and 7.5" tall.
I have an update... I ran oiled brgs on my OTR trucks and those Stemco covers had tight fitting rubber plugs with a tiny vent hole in the center and they were clean. The Kodiaks came with oil covers so I used oil but the rubber plug fits loose so it can breathe and they make a continual mess on the wheels. I tried putting a tiny vent hole in the center but the plugs still puke oil. I may be going back to grease soon unless Kodiak has an updated cover. Craig