Exhaust Manifold
I'm in Edison, NJ. I'm not sure about the USPS any size box for $9. The standard flat rate box starts at $9.80 and will just barely fit a Thermoquad carb. FedEx may be the best bet but that may be a few $$ also. The problem is we are about 2700 miles apart and the weight of the manifold with the packaging is close to 30 pounds. I guess that you have to decide if the shipping would be more or less cost effective than the 1.5 hour drive one way at the price of gas in your area, plus your time.
Ken