Dave, no they don't but we'll try and get a writeup at some point. There's a handy writeup from Don Carter here
http://www.sxoc.co.uk/site/static/13subframe.php
The fitting basically goes:
Take subframe off car (or you can just drop it 6" if you have ramps and gearbox jacks handy)
burn out the rubber bit of the old bushes with an oxycetaline torch
use a hacksaw to make a cut into the metal collar surrounding the old bushes
Belt a chisel/screwdriver along the cut you've just made to remove the old collar
press the new poly bushes into place
insert the metal insert into the bushes
refit subframe making sure the large washers go on the bottom so the bushes are sandwiched safely between the washers and the body of the car.
do it all back up
Jord,
just to clarify, these are the bushes that hold the subframe to the main body of the car, they're big buggers and you need 4 so that's how many you get if you buy a set
We do have the other arm bushes in poly ready and waiting too
If you've got adjustable camber and toe arms and want arm bushes you'll need:
4
rear lower arm bushes
8 of the
other arm bushes (most of which go in the hub end)
Hope this helps