I did not install on a Montana but it was a fifth wheel and was real easy. Rear jacks are drill and bolt on and run wires to basement to controller. Front jacks I did by hooking up to truck and raising old jacks all the way up and unbolt and remove from bottom (If you need more clearance to get jack out you can use jacks to raise camper all the way up and block up frame and lower camper onto blocks) After all jacks are secured and wires run and power hooked to batteries your good to go. We have used ours for 3 years with no issues.
