The FJ80 wiring harness isnt all that bad. The EFI portion is already there - just remove the component circuits that aren't going to be used, like power mirrors and just do that until its a trimmed down version of what is necessary to run it. Leave a few extra circuits there for aftermarket goodies and you'll be set!
In answer to a few frame questions:
I sectioned out roughly 8 inches from what I remember out of the middle section. I welded a rectangular sleeve 6" into each side of the rear sections. Then I used ratchet straps to get the frame square and my wheelbase set again, and then welded it up.
This gives me a super strong bond for the 2 frame rails, and my plan was to use plate on the outer and inner sides for extra reinforcement.
I've been told by a racecar frame guy that not every frame length adjustment uses a staggered cut - the center section of the frame is now the strongest portion of the entire unit even with a vertical cut having been done.
The entire project is currently at RedLine Cruisers in Colorado Springs awaiting evaluation for a prosepective buyer....who knows - maybe it gets built up locally in the end!