Some twin tube shocks should not be mounted rod side down due to oil flow. Many of the aftermarket performance shocks (mostly mono tube) can be mounted either way. The main consideration is the flow of debris and accumulation around the seal.
"Don't take life too seriously. You'll never get out alive."
Does it matter if the shock is mounted a certain way? Mine and my buddies are mounted different in the rear. His extended shaft it up and mine is down
I would ask the manufacturer what they recommend for their shocks, but if you have the shaft down the fluid is able to keep the seals lubricated may add life to the shocks. But again, I would defer to the manufacturer for input on that specific shock.
yes shocks that are designed by the manufacturer to run up side down come built that way. I suppose there are kits but I have not seen them. I know upper tier shocks sometimes are built to order and they can do them either way but not your run of the mill shocks.