1/2" Pickup and Return. How?

I did similarly to above. I think it's worth noting that the hole you make larger needs to have the back-side pushed or peened out(rather than just drilled), as that will support the new line,provide a soldering flange, and provide years of trouble free motoring.I did the peening using a socket,a bench-vise, and a carpenter's nailset.
I only went to a 3/8 line for my little 367cuber,and socks were available for that size. IDK about 1/2" socks.