LS2 Fuel system help????? in a 85 Vette

[69MyWay]

I want to run as many OEM parts as possible. How do I connect from the 3/8" hard line on the 85 Vette and return line through some sort of regulator/filter and to the fuel rail?

I had been planning on running a C5/6 fuel filter as I was told the regulator is built into the filter - then trying to find conversion adapters. However - now I heard someone say the reg is still/also in the tank on those cars????

Help?????