How much car and how fast do you want to go? If you are looking to stay on budget buy something and finish it off. Buy a roller that has the chassis and suspension work done, then you can put in your drivetrain of choice and make small changes so it is your car.
Fuck everybody else, they won't have shit to say to your tail lights.
If you are looking for an f-body to build I might know of one that can be had for cheap, is running right now, and has some work already done to it.