Info: 1984 B250, Slant 6, Holley 1945
I've been having an issue with sudden acceleration and have been given advice from multiple people that it is likely the accelerator pump. A quick look down the carburetor shows no fancy stream of fuel when the pedal is floored or when the pump operating rod is manually operated. Looking at manuals and diagrams that I've found, the pump piston cup or spring seem like the most likely parts to have worn out. I'm not seeing these parts for purchase except as part of rebuild kits.
Since I'm having to pull it apart to get at those parts anyway, do I need a full rebuild kit for replacing gaskets and such or do I need to hit up some specialty vendor for the individual parts instead?
Anything else I will end up needing beyond basic tools if I end up doing a rebuild?