Truck Repair: install time on jake brake onto cummings m-11, jake brake, old detroit

Question
I purchased a real clean use jake brake and I want to know about how long it SHOULD take to install on a cummings m-11?  I have worked on my old detroit 8v-71, and most any kind of vehicle for over 40 years. I was considering putting it on my self, but I have never adjusted the valves on a cummings. I assume i would be better served to have someone that knows do it, although it does look like a simple install. any thoughts would be appreciated. thank you, garysrzi@cox.net

Answer
If you have all the harware parts that is the simple part.The hard part is going to be the wiring in the dash to ECM.Install housing spacer & gasket,the brakes bolt right on the rocker pedalstals.Have to run oil line to oil cooler.Wire harness plugs up to two wire connector on the wire harness.I can tell you how to adjust the valves,not hard at all.