I really need help!!!!

if you have a carquest up near you they use standard products (reboxed) it is supposed to be a good product. thats what i used for my bbd...so far so good. or if you dont, look for standard hygrade carb kits.

since it was cold i would first look to see why the choke is not closing. is the linkage moving freely? is the thermostatic choke pushing it closed when it's cold? is the choke pull off keeping the choke open? (unplug the vacuum line and see if it closes) or unhook it, it may be frozen, if so replace it. the brake system is unrelated since you do not have a power booster.