the evo 9 yea because its brand new i suspect, and the 240sx probably because its 10+ years old, and insurance companies seem to charge quite a bit for older cars for some reason. alot will depend on driving record and stuff, but the fbody will be cheaper on insurance then the ybody. both sports cars, but with corvette you pay for a name with it...headers, exhaust, tires, yadda yadda yadda...insurance included.