Shock Upgrade?

Has anyone swapped out the stick shocks for aftermarket shocks . And if so was the quality of the ride improved

This guy on YouTube is saying that older honda Gold Wing air shocks are a perfect replacement shock for the stock coil overs. You can pic up a used set on flea bay for around $70

This is a low quality vide but you can see how they are being used
[ame=]GEM Car Rear Shocks - YouTube[/ame]

Has anyone tried Kawasaki Motorcycle shocks? Looking to replace shocks on my 2002 E825 4 passenger gem car. Thanks for the help