[Rev]

You also have a 5/16 inch fuel line from the sending unit forward (the sending unit is already 3/8 inch). Not a bad idea to run a 3/8" line from sending unit to the carb.

Those glass cylinder fuel filters are also pretty restrictive. Just take it off and look at the small hole that goes through it. I dumped mine when I ran the new fuel line. Also, a big canister type filter with replaceable element, back near the tank, is not a bad idea.

I prefer an electric pump, but I'd bet that the Edelbrock mechanical pump is plenty adequate. You could put a gauge (vacuum gauge has a low pressure gauge in it also) on the old pump to check for adequate pressure. I'd expect 5-7 psi for a good pump with the engine running.

Rev