sbc 305

so i just need reassurance as to what i need to add ss braided line from my fuel pump to the rochester 2bbl carb i have

i have a sbc 305 and not sure if the steel line is 5/18 or 3/8 but i wanna add -6an braided line

is this what i need
two of these for pump and carbhttp://www.summitracing.com/parts/SUM-220667/?rtype=10

and

2 of these for pump and carb
http://www.summitracing.com/parts/RUS-610160/


or is the fuel pump need this one

http://www.summitracing.com/parts/SUM-220690/?rtype=10

thanks any help is appreciated