Hi Mark, Thanks for the info! I don't think that the pipe is rusted out. I bought the car about 2 years ago and it looks like someone went through the engine really well. I also checked the jets when I rebuilt the carb. I agree that it's a very simple carb -- but I had a national old carb rebuilder tell me that he won't touch a Marvel as they are such junk! So I've flipped the intake, made spacers for the front & rear manifold studs, got a longer front stud, bought & fabricated a carb adapter & I'm back to the questions that I posted. Any additional info will be very much appreciated! Thanks much! Steve