I searched the forum and found lots of threads on drum to disc brake conversions. My GS350 has front disc and rear drum manual brakes and I want to convert to power brakes. While doing this I plan on replacing the brake lines and upgrading/replacing front suspension components. What parts are needed for the brake conversion? Power Booster, master cylinder, Proportioning valve, Vacuum?? Can I use the rest of the exisitng components? Are there any kits for the conversion or stainless brake line kits you would recommend? Any other suggestions would be greatly appreciated.