My Dad has a 2006 and I have looked it over some. One thing you might want to look at is the parts list Quigley sent originally. If you don't have it, I'm sure research can turn up a copy.
Then you'll know what's been used that isn't factory Ford. Quigley uses Ford parts, except for the few they fabricate for the conversion.
Like the gas tank...Dad just had his off. Only difference is they chopped the end and put a different end is to make room for the transfer case.
I don't think you will see any problem with the steering column, but you will see that they modified the main crossmember in the area of the front differential. You'll need a decent cutting torch.
Height differences seem to be accounted fopr in the coil springs/pockets/etc. front and about 3 1/2" lift blocks rear.
Seroiusly, I would get them side-by-side, measure everything that makes sense, compare measurements, and decide if it wouldn't make more sense to move the drive train over to the 150.
If the frames are the same as someone said, all you'll have to do is cut the cross-member, mount the front torque tubes, mount the other gas tank, and swap the running gear.
There'll be a bit of cutting and welding. Since you own a Quigley, there should be no problem getting parts from them if necessary.
The rest will be penetrating oil and wrenching. I'm excited for ya.
Good luck and SHOW US YOUR PROGRESS!