That is not silly question its a good question.
It is kind of hard to determine if there is a Okie or a original factory bushings installed.
The bushing in the your photo looks like an original front factory bushings.
Picture of an original front bushingThe original bronze bushings have those tiny holes in them. At least the ones I've seen.
The Okie bushings are smooth with a couple spiral groove in them.
The bushing puller should be able to pull both the Okie and for sure the original bushing..
If a Okie is installed sometimes the bushing puller just pulls out the bronze bushing. Not good..
The only other way is to pull out the propeller shaft, read Okie History below.
The Okie bushing was created by the long gone National Machine Works Inc in Oklahoma, hence the name Okie.
It shortened the time and effort to repair the torque tube bushings and oil seal.
If you did it the way GM did it, you would remove the entire torque tube from the rear axle.
Remove ring & pinion gears
Pull out the propeller shaft from the torque tube.
Use special tools to remove and replace the bushings and oil seal.
Then reassemble everything. Pain in the Butt.
With the Okie bushing you just pull out the front bushing.
Then from the front of the torque tube you push in the Okie bushing sleeve, which has the Front bushing,
Rear bushing & Oil seal inside the sleeve. Less Work.
You leave the old rear propeller shaft bushing and oil seal in the torque tube.
With the propeller shaft out of the torque tube, you can pound out the oil seal and the bushings with a long pipe from the pinion end of the torque tube..
GM used special tools.
Picture of Okie bushing click on pic Knurled end is the front
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