Help needed with identifing a carburetor
 

I recently acquired a Rochester carburetor at an Estate sale and I need some help in determining the original application. The tag on the carburetor has the following numbers:7024074 and 8 04 60 which seems to indicate that it might have been used on a 1961-1964 Pontiac GTO with tri-power. The fuel bowl has a casting number of 7019927. The shaft in the base of the carburetor protrudes 1 1/4". This could have been used in the linkage for the end carburetor. I am going to try to attach some pictures. Any help will be greatly appreciated.

Thanks