Where can i buy the fuelline tube screw and vacume tube screw that is ment to sit at the end of both lines and connected to the carburator. Does some of you knows the inside thread size and the with of the belonging tube for the fuel inlet (in the midle) and the vacume connection(base flange) ? Attached some pictures that shows the inlet. The Rochester B/BC have other sizes couplings! Martinius. http://www.carburetor.ca/carbs/kits/CK029.htm http://www.carburetor.ca/carbs/tech/Carter/images/YF-YHPartsID.jpg