Hello I have a set just like yours. I had them done by SixPack Performance years ago. For my 496 big block engine to work with a Paul Rossi SixPack intake (tunnel ram) If you or going back to stock carbs you will neeb all three carbs.Try to sell them to help you buy new ones.Your Distributor looks to be off some . The vacuum should be facing the battery not the carb.What year car? I have a NOS 1970 CARB, NUMBER IS 4144 new never had any gas in it or bolted to a intake. E-MAIL ME IF YOU LIKE . mosweethemi@yahoo.com