Ditto what they said above. Rust is the enemy, (and a costly enemy to vanquish). Zhome.com does have a good buyers guide. It details the problem areas and things to look for when buying an early Z. What do you mean by the perfect 240Z? If you mean a ready-to-drive, fully restored car that is more or less stock, based on the ads I've seen, expect to pay $14K to $25K, depending upon the quality of the work. Of course, there are exceptions... If you are looking for a good "driver" needing cosmetic restoration or with minor mechanical issues, expect to pay around $4K to $12K, depending upon condition. Less if there are significant rust or mechanical issues. It's typically cheaper to by a restored car or good condition driver than a fixer-upper project car. Unless you have the skills, tools and time to do the work yourself, if you have to pay for resto work, it can be very expensive. That said, there is a wonderful sense of accomplishment associated with doing much of the the work yourself. (That's what I'm doing, but it's not for everybody). Happy hunting and good luck in your search.