LCA Bushings and Other Bushings

How hard was it to install the nylon bushings?
Even with a shop press to help in disassembly and assembly there is the joy of very carefully cutting the old shells out of the LCA. I used a sharp cold chisel. I had a new set of rubber bushings with steel outer sleeves - which are needed as well. I don't think anyone sells the steel sleeves seperately.

The new nylon bushing gets pressed into a steel shell, the shell into the LCA.
If you use Firm Feel's pivot pins with grease fitting, the inner steel sleeve for the the nylon bushing is not needed. I think the same is true for the polyurethane bushings - but I've not taken measurements of the different brands of lower control arm polyurethane bushings to know for sure.

edit: I also scored the outside of the steel sleeve before pressing into the LCA. Probably not neccessary, but the nylon on the inside will not compress they way poly will. So, by scoring it, the steel has a place to go.