Well, im impressed, going back to the roots, cool. However, a lot of those cars from the 30s had mechanical brakes instead of hydraulic. Dont even try that. Power brakes are easier for your leg, thats about it. A hydraulic, split cylinder brake system would be the best bet. Now, frame wise, i would make your own. A lot of the race cars were either factory ladder frames or custom built. Also, if you build you own, you can put in a roll bar assembly. Something i would sincerely reccomend. Well, hang around for a while, and have some fun. and you had better do something with that grand marquis while your here!