My jack is meant for lowered cars, so if I tried to raise up the ZR2 by the say the side of the vehicle on the frame, the truck wouldn't even make it off the ground. Is there a center jacking point in the front that I might be able to use? Or better yet, where can I get the proper jack?

 

You can probably buy a jack at the local auto wrecking yard.
I bought a floor jack, a bottle jack and a jack-all jack from a small auto parts store locally. The only reason I bought three different jacks is that they can come in handy off-roading.

 

should be able to get a decent jack from the local car parts store, or tools/hardware store (menards, homedepot, lowes, ace, etc.). I know right now that advance auto parts is running a special where you get a 2 ton jack and two 2 ton jack stands for like $30. Which will be good for your blazer.