RockinGTA89

okay i've already did a search here and i'm pretty confused from what's going on...

I own a 89 gta and i have decided to repair my power antenna mast since it was broken off a few years ago. (I disconnect the relay to prevent from the motor from continuously running and draining the battery.)

Here's my issue...
after reading several threads about what is the correct part number to get as the replacement, (aka pt# 22038195) I've discovered that this part number only works on vehicles for 82-88 models. However a couple of people mention that this part has also worked on a someone's '89 TTA and a 92 GTA...

The oem gm part number for 89-91 is 22072184 and i haven't been able to find the superseded number for this, nor can i find the part anywhere or even at my local dealership. They say the number is valid but that part has been discontinued. Under the search results i haven't been even able to find this part number as well)

i wish not to purchase the whole assembly (if it's even avaliable)
and the original part number for that complete unit is 22093964....

anywho if there's any help to clarify this i would extremely appreciate it...
I'm willing to spend the money that is needed to get the situation fixed as this is part of my restoration process....