I will measure that out and confirm.
Just chiming in here, I recently lifted and aligned my Bronco, and added all new steering. No 5.5” lift, just 2.5”, but regardless getting a lifted Bronco to solid alignment is a chore. James Duff has some great videos on how to get better than stock alignment. Go to their YouTube channel and watch all the videos on it to help grasp the concepts if you don’t already know them. Those plus this forum were a huge help to get mine driving a lot better.
For mine I had to do the following:
First things first I went and got an alignment numbers on existing Bronco from a local shop to understand what needed fixing. Knowing your baseline is essential to getting the right parts.
1. All new Heim steering linkage, Duffs is great cause you can adjust while installed.
2. Adjusted and centered steering box and aligned pitman arm to the frame (arm is a beast to get loose).
3. Put in all new 7degree C-bushings and radius arm bushings to get caster to 3-4 degrees positive based on my initial numbers. As far as I could go without a cut and turn on axle, some guys say get to 5-7 degrees positive caster. But 3-4 is respectable.
4. Leveled my radius arms with careful c-cap bolt tightening to avoid Bronco lean
5. Made sure pinion angle passed the droop test, to make sure you don’t break or wear driveshaft down.
6. Put extended brake lines up front as well.
7. Got toe in to 1/4”, and caster to 1/8” if I remember right, or right around zero.
With a lift like yours though I imagine you’ll need a drop pitman arm, and a welded on trac bar bracket(which is stronger than a trac bar frame drop bracket). Also you can do tie-rod over install to help with geometry being less steep. I also imagine you have radius arm drop brackets or extended radius arms for a lift that big, I’m not even sure you can lift 5.5” without doing that
. And hopefully a high pinion on your front axle to get any sort of reasonable pinion angle on the front driveshaft. Other options are a cut and turn on the axle, and adjusting the c-bushing wedges at an axle shop. As you can see the ripple effects can be large, and a lot of guys just change one thing but don’t bother with the ramifications. Either they don’t know, it’s too expensive, or just ran out of time, or don’t care and have run their Bronco that way for ages, or all of the above. Just depends on your goal, your anal retentiveness, and how many replacement parts you want to buy. But get one good death rattle due to bad steering geometry and you’ll finally get after it. I hear it’s a butt puckering experience. Hope this helps! Good luck!