My Dad is looking to put new springs on his '98 T/A. Car is full-weight, minor mods...some suspension. He's got Eibach's now, and being several years old they have settled quite a bit. I don't follow the f-body mods, so I'd like to hear what's good. Right now his car has way too much drop, he's looking for firm but driveable (and daily driveabe...he's 80).