Considering engine modifications to my '99 323i. If I stick to the Jim C. or Dinan upgrades, do I need to upgrade the suspension at all? If I supercharge, I assume there is no question about upgrading the suspension. However, is an upgrade in wheels, tires, springs and shocks all I will need? Talking to the dealer, they mentioned that other components are also swapped when upgrading to the sport package, which I do not have today.
Thanks for the help.