[wannahonda]

Keep in mind there is a mounting difference on the SC and non SC models, I believe for the rear....

 

[wannahonda]

For sure the SC bar will be stiffer which I assume means it is thicker and or possibly not hollow?

I know aerogenics makes these adapters to mount the rear SC sway bars onto non SC models

2003-11 Honda Element SC Rear Sway Bar Adapter - Aerogenics

 

[wannahonda]

I suppose for the design of these custom bars we could go with the non SC diameter bars so we can still use either OEM rubber bushings or polyurethane bushings meant for the OEM size bars

but make the bars solid instead of hollow (assuming the stock ones are hollow? I can't remember off the top of my head)

and then give the bars two or three mounting points per side so they can be "adjustable" for stiffness