After reading your advice I decided that I would burn out the bushing. Before I left for Home Depot to get another tank for my propane torch, I soaked the bushings with Kroil.
After about 1/2 hour I was nervously crawling under the car getting ready to fire that torch up just a few inches from the gas tank. Just then my dad says "try to pry them out one more time, you never know."
So I stick a bent screwdriver up in there and yank. The bushings slid out smooth as could be. All four on both sides came out with minimal effort.
The moral to this story is Kroil is great stuff, especially if you give it some time to work.
Yeah. I work in a spring shop, and the guy before me caught someones car on fire from the torch, oxy-acc. torch even. I saw the car, it melted the rear valance, and blew a hole in the frame, not pretty.