that strut is definitely leaking, and not serviceable.
procomp doesn't make shocks and struts, but they do rebadge cheap ones.
Some bilsteins as Saker recommended will offer adjustable perches like the one in your photo. 5100's can be purchased for all 4 corners for $400 or so. The larger 6112's are a bit more.
It's not a big deal, and it looks like your non-serviceable suspension has reached the end of its life. I'm guessing that the rear either has a spacer on the coil spring, or longer springs. (rear springs are cheap- and definitely worht the upgrade if you're changing the ride height)
If you like the ride height as it is, and are ready to proceed with the repair,
it's time to shop for some new struts and shocks. This is now a budget exercise.
So how much are you looking to spend??
You can PM your credit card info and address, and I'll surprise you if you'd like.