If you're going to pitch your old shocks, dissect one so we can see how they're assembled.
Here's instructions on how to disassemble external spring rear shocks. I put this together about 6 months ago.
Pic 1. I placed the lower body of the shock in a vice. Using wood on each side of the shock to protect the paint from getting scratched. You also have to be careful of the pressure applied so you don’t collapse the shock body. Next unscrew the lower eyelet.
Pic 2. Compress the spring. I bought this tool on Ebay for $37, free shipping. Made by Tusk. I'm sure one can be made cheaper.
Pic 3. You can see in this photo the play in the eyelet rod as the spring is being compressed. This is all the spring needs to be compressed.
Part 2 in my next post.