It is always cheaper to buy a finished car, or even better, an unfinished project, and then "make it your own". Beyond that, the choices are unlimited, so you might ask yourself what you especially like, and what you will be using the car for. That may help to narrow down the possibilities.

You might also take inventory of your skills, as hiring out the work could get real pricey if the project required a lot of things that you can't do yourself.