Im about to buy a 280z that was originally from California (I live in New York). It has really minimal rust from what I could see. There was a paint bubble and some surface rust, but i didn't see any rust underneath the car. I'm wondering what the best way is to keep the car from rusting over this winter. I was thinking of spraying some rubber undercoating in the spots where Z's are known to rust. Does anyone know any other cost effective ways to protect from road salt? I don't have much time before the first snow.