Just trying to find what year carb I have so I can get a rebuild kit for it. It is a rochester 2 jett with a stamping # of 7000285 on the float bowl. That is the only number I see. I'm looking to put it on an Offy 3x2 intake. The other carbs I have are center carbs for the 64-70 GTO 3x2. any help would be great