The challenge is to make the car viable transportation with today's cars and drivers.The ability to create the power and speed using stock components as a base to build on is possible. You can double the power of a stock model a engine with bolt on parts.you can add an overdrive to run modern highway speeds.Properly adjusted and maintained mechanical brakes are adequate for the job,provided you practice some common sense,smiths rule of air space for trucks is a good rule of thumb, 1 second for each 10 mph of speed between you and the car in front of you..add 1 second for a model a..Smiths basic rules havent changed in years..this is a neat Ford video..
https://www.youtube.com/watch?v=i8ECGHoMTu0