I just did a set of springs like this.  They were out of the car so it was simple.  I had a socket that was just a tad smaller in diameter than the spring.  That along with a good hammer drove them right out.  Put a little grease around the new bushings and reverse to process to put the new ones in.

I also have one of these which has come in extremely handy of the years. I've used it for items such as this, u-joints, ball joints, just about anything.  

https://www.amazon.com/OTC-7249-U-Joint-Anchor-Service/dp/B0002SRGXY?ref_=ast_sto_dp

Actually the cutting method is about it then. Unless you have an air chisel available. I thought you were still fighting the rubber too.

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

Its not the Rubber that's the Problem. The Rubber is bonded to an outer Steel Shell that's pressed into the Eye of the Spring as part of the Bushing. I have purchased a Sawsall to cut 2 Grooves in the Shell and take a small Section out. Should allow the rest of outer Shell to be knocked out with a Punch. The replacement Bushings won't fit with the Shell still in Place. Fairly thick.

  

Get your drill out and start boring holes in the rubber eventually they will let go and come out. The threaded rod method will also work for both pressing them out and putting in the new ones. 

Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

The Problem I am having is that the rear Bushings Top and Bottom are pressed in like the Front One. I need to get those out of the way so I can use the replacements like the Ones U got. I have those but until I get the Old Ones out I can't install the new Ones. If I took the Springs out it would be easy to get them Pressed out. Problem also is that the Top Frame Brackets are riveted to Frame. Not bolted on as Shop Manual Shows. Cut the Rivets and replace with Bolts. Trying to avoid doing that also,Maybe your's were done previously or are replacement Spring Sets.

  

It’s not a bad job, front spring bushings are pressed in . Any shop with a press if you don’t have one can do that pretty easy. The rear is simple just get a bushing kit and a new shackle, no press is needed. I got my parts from MACs seemed to be good quality.

Looks like something that would work on mine.

  

Mark, watch this. It will give you an idea of how to make a cheap press.

https://www.youtube.com/watch?v=sZueMg_FpqM

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That's what is supposed to be the Bushing arrangement. Last Time I replaced Bushings on my previous Car it was as shown. What is on mine is a Bushing similar to the One in the Front Spring Eye. Metal Shell with Rubber Insert and Metal Tube that the Bolt goes through. Pressed into the Spring Eye and the Frame Bracket. Also Shop Manual shows the Frame Bracket as bolted to Frame. Mine is riveted to Frame. Makes it very difficult to replace Bushings. Obviously the Bushings have to be pressed out and replaced with the Bushings shown in Parts Catalog. Also the Shackle Bolts are separate from the Bracket and are too short to use with replacement Bushings. I had to cut the Heads off the Bushings to use existing Bracket Bolts. I just wondered if mine is an Oddball or were these Springs assembled at the Assembly Plants with two different arrangements?

  

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