Finding the right parts

Does anyone know who sells the two-chamber master cylinder that was available for heavy-duty use 1964 Darts? I remember my 64 sedan had a two-chamber master, but my 64 GT convertible has the single-chamber master. I've found a two-chamber, but it doesn't come with the plunger that attaches to the brake pedal mechanism. The single-chamber I found does have it, but I want a two-chamber that comes complete with the plunger. Or am I over-thinking the whole thing?

Also, does anyone have a clean 64 GT hood emblem? On mine, the plastic is all cracked up. I've seen someone selling NOS 270 emblems, but not the GT emblem.