Just noticed you have multiple threads on this. I replied in you other thread here;

Where is Fuel return line? - Open Discussions - The Classic Zcar Club (classiczcars.com)

Which thread do you plan on sticking with?

stick with this one i guess...   i assume the return line is there and all lines are there... just a matter of figuring which ones are blocked...

also need to make sure pump works and check relays...

but i guess its best to make sure car runs off jerry can beside mechanical pump..

but about rerays:::

are there other relays under passenger foot area? or will i find these easily?

can they be replaced>? are there after market ones?

will the ac dekco after market fuel pump work?

can car run ok with bypassing pump??

Yes, there are other relays besides the ones added for the electric fuel pump. Hopefully others can address replacement options. You don't say which pump you're thinking of bypassing? Car should run with either pump bypassed. On my '71 I've removed the mech pump and gone electric. from your picture that has the mech fuel pump in it it appears both the feed and return fuel lines are connected. I also note that the original flat top carbs have been replaced with round top carbs which was also done at some dealerships because of the vapor lock problem.