It fits good, and I wouldn't say it has to have mods to the tunnel to work properly, but mods would allow it to fit better and gain me some ground clearance. I thought the installers did a very quality job, I just didn't realize at the time that it cost me some GC.
As far as driveline angles go, I don't have any funky vibrations, but I did have to play with the rear a bit initially. I did all that years ago when it was first installed, but I don't remember how much angle is in there. It's not much (I don't think), as the fat part of the shim is about 1/4 inch.
I just went and looked at what it would take, and it would be some work. maybe I'll put it on the "when I'm retired" list.