I could smell petrol, and saw the fuel pump had fuel all round it's rim. Thought it was the line from the carb (original Aisin malarkey) leaking so cleaned that up but it wasn't. It seems like the pump itself has a leak around its join.
So, decided I would buy another pump as this one is prob the original 30 odd year old one, but all the pumps I see online are different looking!

This (assuming the link works) is my pump, and the pic shows the leaking fuel around the rim.
can I assume a regular looking 'normal' pump would fit, and if so, how do I know which lines go to where?

https://ibb.co/wC02TGR
This is what all of the pumps I see for sale look like;
https://ibb.co/1zGD545
Thanks for any advice!