What engine? Asking mainly for dipstick reasons. Stock Bronco had a pan mounted passenger side dipstick. Dipstick followed the pan. Sometime in the 80's the dipstick moved to block mounted on the driver's side. I'm pretty much ignoring the early car setups that had the dipstick in the timing cover for the front sump pan.
Mixing and matching parts, you could have as many as 3 dipsticks and as few as zero.
If you have a late model block with the dipstick on the driver's side, the easy fix is a fox body mustang oil pan. It is a little messy as there is a front sump that when you do an oil change it will drop on the steering linkage. And you have to drop 2 drain plugs to really drain the oil. Never run the timing chain dipstick with with a fox body oil pan. It will read the front sump and say you have oil while the rear sump that has the pickup in it goes dry. I once knew a guy that lost an engine because of that.
You can also use Explorer pan as well.
Remember the pickup is matched to the pan. Bronco, mustang, Explorer are all close to each other, but not the same.
Running an early block without a dipstick port? I would be looking for a used Early Bronco pan. If you find a used one make sure it comes with the dipstick and tube.