My advice would be to get everything mocked up before you finalize anything.
The mod to the radiator support is pretty straightforward, I mounted the steering box where a 250 tower wouldnt work and still had to cut the rad support. On his 68 the box would hit the bib marker light if it went...
In 10/72 the 40 column changed from bench seats and one piece column with key on dash to buckets and a 2 piece column and box with key on the column. (among other changes).
Ask away.... The easiest way to deal with your steering column will be to cut it off in the engine conpartment and use a firewall anchor plate and a bearing between the inner shaft and outer column. Cruiser Outfitters or Georg can help with this. Mounting a power steering pump to the F will...
I just went through this on a friends rig.
What year is your 40?
I used a rebuilt box from West Texas Offroad.
Saginaw pump kit from Valley Hybrids
FJ40 Jim air pump idler pulley
Weld in TRE inserts from 4 plus with a 555 FJ60 TRE kit from Cruiser Outfitters
Steering Linkage parts from...