Mazda2 2012 Coil springs

Hello all, I hope I am posting this in the right category. I am looking for some heavy duty coil springs for my Mazda2. Does anyone have a source for those? I can buy OEM Mazda Springs, but is there a better option? Maybe Lesjofors, or Sachs? I cant find any front coil springs by these manufacturers, so I also don't know the spring rate. Help if you can. Thanks Dan
Mazda 2 / RSTi / FJ80
Hi Dan, when you say heavy duty are you referring to a stiffer spring rate to hold additional weight? Is there a purpose in mind as to why you may need different front coils? I think you'll be hard pressed finding a non-lowering spring that isn't pretty much the same as the OE spring.