1/2" Pickup and Return. How?

I'm upgrading my fuel system because my volume requirements have increased and would like to change my factory pickup and return lines to 1/2". I'd like to remove the pickup assembly and replace the 3/8" with a 1/2". I think I can bend up a steel line or similar to match the shape of the original pickup tube, but how do I attach it to the round plate? I saw somebody do it with JB Weld (which I don't like), I've seen others suggest soldering. How have you guys done it and what tools and materials are required?

Thanks!