I went with the 1" and so there were no issues with any linkages that needed extensions or brackets. The only noticeable issue is when putting the truck in Park. It goes there but unless you give it a gentle nudge to go the last 1/4" to actually "click" into the postion it won't release the ignition key. It'll still be "in" park and won't go anywhere and you can kill the engine it just won't let it out unless it has actually clicked into place. That's it.
I was able to re-use the lower radiator brackets as they have just about exactly 1" of additional space you can use. For the top, I just mounted up the bottom after modifying them the additional inch then matching the top mounts with new holes drilled into the front bib. I re-used all the oem mounting bushings as it really wasn't that big a deal to raise it one inch. All the fuel, brake, coolant hoses looked like they hadn't moved. It was really not noticeable. I did raise the stock front bumper as I need to keep it there until I can fabricate a winch mount bumper that will deal with the 1" bodylift, hold a winch and not interfere with the re-located tranny oil cooler and intercooler plumbing. As I mentioned in previous posts, I did this mainly for the clearance of the intercooler pipes and to allow me to put 3" exhaust from the turbo outlet all the way back and route it over the frame rail. The additional tire clearance and room to change suspension mounts like the top of the rear shocks was just a bonus. I didn't touch the rear side bumpers as they just got dragged down a bit.
I've had it on since late Feb, put about 10K miles on the truck including wheeling Death Valley, the San Juans, Moab, and John Bull, etc. along with thousands of highway miles and have had no issues. I check it regularly too and nothings moved.
AMMO has a 2" or 3" body lift on top of his OME 850/863 setup and he had to go to elec cooling fans for the radiator and completely removed the mechanical fan and clutch. I don't know how he dealt with linkage issues but I've seen his truck and wheeled with him and it performs fine. He does have a wee bit of a problem with cooling in my opinion. He may disagree but his truck is bone stock in the engine and if he pushes it too hard for too long it'll start creeping up in temp. I don't think the elec fans alone could handle forced induction. Hopefully he'll chime in once he returns from the Garden State.
Here's some shots that I think got deleted.