Carburetor Question - Is this a good call?
If you are going to rebuild a carburetor buy or borrow an ultrasonic cleaner. They work great for cleaning out all the small passages. If you have to buy one, might be kind of expensive for one job. They are about $200 ohm Amazon for one big enough.
in my opinion, holleys are great when they are new, but are very frustrating once they get a little old, or you try to rebuild them, but that may just be a reflection of my skill level