Heavy Duty Coil Springs for a EZGO Marathon

[Marathon owner]

I have a 84 EZGO Marathon. I installed a rear seat, and it seems to need heavy duty springs. it has coil springs and I can't find any. Will replacing the rear shocks help?

 

[Nubs]

I found that replacing with air shocks was the best way, you would need to make some brackets to mount them. I don't have any parts numbers for ya

 

[Marathon owner]

Where do you get the air shocks and how do you size them? auto parts store?

 

[Nubs]

Like i said you would have to make them fit, the Internet / ebay etc is full of choices and most listings show the fully closed and fully open dimensions and mounting, If your not into retro fit thing then i look for a different way to go