Type of shock

[jaycojman43]

How do I tell what type of rear shock I have. They leak and need to be rebuilt. I have looked around and seen progressive 416 shocks for $300.00 plus. A little hard on the wallet right now. I also seen rebuild kits an springs for 1984 Goldwing shocks. So how do I know that the kits will fit. the shocks when you look at them only say Air shocks on them. I see no number or anything else on them.