I am in the middle of a rebuild with parts still soaking. I was lucky enough to have 2 NOS discharge nozzles, given to me by an 88 year old Ford lover who gave me his Holley stash. As careful as I was, I still broke the elbow off of one of the stuck ones. While the carb is apart, I noticed the jet sizes were 50. I happen to have two new unused jets marked 53. I am not a hot rodder and would like the car to be as smooth and efficient as it was when new. I hope someone can recommend which jet size to choose being that fuels are not what they used to be . I will do the Eaton conversion to make this carb compatible with the later distributer. It worked well on a teapot I rebuilt last year. I noticed it has a little click in the throttle shaft. To me , and I am not an expert, it did not seem excessive. I will consider one of the throttle shaft repair kits if it does not idle to my satisfaction. I hope anyone on this site who has done one of the kits will chime in with advice.. I appreciate all the advice I get .