Dorman 800-075 that will be the feed 3/8 line
Dorman 800-074 5/16 return line
Dorman 800-075 5/16 fuel fittings
Dorman 800-082 3/8 Fuel Line Fitting
Motorcraft FG1083 Fuel Filter 3/8 push connect ( may be wrong its been awhile) also this is only a filter. it does not regulate fuel pressure
Spectra Premium TR7 Fuel Tank Lock Ring
Total is about 60$ so not bad for the parts listed above. The fuel system will cause the most headaches in a LS swap. Either spend big bucks for a aftermarket setup or piece together a OEM setup in my opinion. Anything else can be a gamble. I have had every external fuel pump fail. Not worth it. Every customer has had their external pumps fail within 6 months. I know some others have had better luck but it is not worth the headache and stress.
If you need a regulator for a none return system get this
WIX Filters - 33737
New AC delco Pump
https://www.amazon.com/ACDelco-Assem...1%2C3937584011