Personally i dont see Ujoint being a practical solution for anyone on this forum with a Chinook. Unless you want to remove your front bumper completely or take a chopsaw to it so your tires dont hit the bumper when you turn corners. Look at pictures of vehicles with their kit on them. You will never find an image of a Ujoint kit showing a straight on side view. Thats because their kit moves the axle so far forward under the vehicle that the tires rub on the front bumper when you turn. With a straight on side view the vehicle looks literally like a clown truck and completely disproportional. The only images you will find are all taken from an extreme angle versus a straight on side view, thats intentional so that you dont see how odd it looks. Thats certainly not to imply anything about its functionality or that it is in some way not appropriate in an offroad vehicle. Personally i spent in the area of $3000 on my front bumper and im not about to chop it up for any reason.
Just a couple of examples of what im talking about.
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I just had a conversation yesterday with an indivdual that had Ujoint do his conversion. I can tell you that he is far less than happy and said he will never go back. He had to pay someone else to correct the work that Ujoint performed, one of which included rebuilding the entire front axle he purchased rebuilt from Ujoint as part of the conversion.
Anyway i only mention any of this because although im sure its a great functional kit for dedicated offroad vehicles. I dont think there are many folks that want to chop up their Chinook just so their tires dont rub.
I suppose a person could purchase an axle pin relocation plate to stick between the axle and the springs, but that will only move the axle back maybe 1/2 an inch max. Plus you shouldnt have to do that when youre paying $5800 just for the kit not counting labor. I called them once last year to inquire if they could provide me a kit that didnt move the axle so far forward and they said no. Apparently from what i gather they have the spring manufacturer intentionally move the axle locating pin in the springs forward to move the axle froward in the truck.