on a few blocks that boss did not get drilled or threaded but you can clearly see the boss behind the radiator hose and below the freeze plug, in this picture, if you remove the pump and verify the fuel pump push rod is cycling in and out as you manually rotate the engine, with the fuel pump push rod on the cam lobe then you've obviously got a fuel line or pump issue.
btw
From experience I can tell you, those cars are A LOT of fun to drive and easy to work on making them a fun toy,
if youve ever wanted a fast car, a properly built T-bucket can sure satisfy your desire to scare yourself silly
THAT car brings back MANY memories as several of my friends used to own,or still do own similar cars,
one in particular with a stroker 440 mopar, torque-flight trans and a dana 60 rear still makes me twitch, remembering how fast it was and how close it came at times to getting us killed before we fully understood that fully functional brakes and suspension were also mandatory features
the problem is that you can,t leave them un-watched for long before some total ass starts screwing up your car, its like theres a 6 foot tall blinking neon sign only total jerks can see that says
SCREW WITH THIS CAR,!, STEAL PARTS!, IF FOUND UN-ATTENDED!!!