Thanks for that. I will try that location. This question came about because I ordered a used set of GL1200 shocks only too have then get lost in the USPS mail. I am so mad!!!!!!
Now I got too put up more money for another set, new or used.
Welcome to the site. This is a great resource. No matter what goes on with your wing someone has been there already and can usually help out.
Now as far as rear shocks go. If your 1200 has saddle bags then it is difficult to adjust the non air version of progressive shocks. You will have to unbolt the bags every time to adjust them. That is why the air version is generally the one that is recommended. As far as used shocks go I personally do not recommend going that route. The reason being that the springs tend to sag over the years. That is usually the problem and it is not a matter of mileage it is of age.
The option I took on my '87 Aspencade was to rebuid the stock Hondarear shock housings using Progressive Suspension springs and hydraulic damper units (shock absorbers).
This has the particular advantage of allowing you to keep all of your stock air suspension plumbing (fittings and hoses) which is easier and maintains the stock look of the bike.
There is a great set of step-by-step instructions on how to do this posted on http://www.GL1200Goldwings.com in the Suspension sub-forum. You can go there and search for it. (FYI, that site has been having some problems in the past few days. It's been up sometimes and down at others, so have some patience with it.)