My 67 Galaxie has 4-wheel drum brakes. I'd first like to be able to use less foot pressure while using the brakes. Will I see a significant difference adding a power booster only as far as pressure to apply drum brakes? I do need a smaller booster that will clear aftermarket valve covers. Any suggestions where to buy a smaller booster? Later, I'd like to add a new aftermarket disc brake system. So far, I've not located a manufacturer that offers one for the 1967. Seems they all stop at 1966. Does anyone know of a company that sells a disc brake system for the 1967? Of course, I'll always consider doing both at the same time if a company offers a "package" deal. Thanks in advance for help.