Hy Gene_Spartan80, I also agree with Mike B and 69Cuda, if the stock braking system is in good condition and kept maintained in that condition you should have many miles of trouble free use of your braking system. If you must go up to a dual system I'm sure you could come up with a system that could be installed under the floor using either a vacuum booster in front of the master cylinder or a Hydroboost system. The one point which must be adhered to is not to go smaller on the master cylinder bore than the factory specification. A new dual braking system will take a while to design and install, I hope that helps.
