i pay about $400 a month for insurance on 6 cars. listen to others in this thread, and do not buy the car until you can put at least half the money down on it, and have a completely steady job. you mentioned you were switching jobs soon--not a good time make a big purchase. also, i'd like to see the 11 year old fbody worth $11k. you can get '04 GTO's for that price.
also, insurance is going to eat you alive if you're paying $360/month for a civic. while you might be able to afford and extra $250/month right now--you might be able to do it consistently for 2 years, hell, maybe 3 years. but paying that amount for 5 years straight is a different story. add in life's unexpected surprises---tickets increasing your insurance, maintainence on an 11 year old car, modifications, job instability----you get the picture (i hope). you're young, plenty of time to have toys, so be patient