Though, my math might be suspect. Let's see....
I plunked the Jeep wheels under the box, and under the front clip, and separated the rear wheels 65" hub-to-hub, and the front wheels 65-3/4" hub-to-hub.
The front rim is tucked in 4" from the outer fender edge, the rear 3-1/4" from the fender.
The rear rim inside-to-inside with the Jeep wheels and the 9" is 53", outside-to-outside is 70", a track width of 61.5". The factory HO32 and wheels are 54.5" inside, 67.5 outside, track width of 61". Cool.
The front rim inside-to-inside with the Jeep wheels is 53-3/4", outside-to-outside is 70-3/4", a track width of 62-1/4". Apparently (The original front is stored elsewhere right now), the factory front wheels are 56.6 inside, 69.6 outside, track width of 63.1".
So it looks like I do need to widen the front .425" on either side to match the factory track with these wheels, which I was kind of planning to do (though out-of-my-bum I was winging it with 3/8")
Or leave them; people pay money to have a narrower front for riding low.