Here are a few options that you can do.
Use this regulator. Has everything you need to hookup the lines.
https://www.summitracing.com/parts/tnk-ls9904-kit
Buy three premade 6AN lines. Something like these, depending on the length that you need.
https://www.summitracing.com/parts/fra-60261216bl
Your Holley tank hat output should be 1/4NPT. You need two adapters from 1/4 to 6an.
https://www.summitracing.com/parts/sum-220647b
Check your Holley fuel rails for the size of the AN fittings used for your feed line. If its 8AN get an 6AN adapter instead.