i am in the process of dropping a 408w stroker motor into my 87 hatch. i cant decide on the fuel delivery. i already have a 12 gallon cell and holley blue pump that was for another project. i know they have regulators that convert high pressure to low so you can use an efi fuel pump for a carb, car is originally efi and stock tank and pump work fine. which setup would be easier and better for my application? should i keep my stock tank and stock fuel lines and just get a high pressure to low regulator? should i just go with the cell setup? are the stock lines big enough to handle my application? would i need a return line for the cell setup? what size lines should i use for the cell setup, if i go that route? for anyone who has done this swap, please let me know the best route to take and what your setup is.  

I would go for the Holley blu and cell because you already have it. I think the blue is self regulated anyway. But, Jegs and Summit racing both sell complete fuel kits. (regulator, -8 lines, fuel pump,and hardware) for around 200$ This kit will support up to 800hp @ 6 to 7psi. Plus you can add an extra fuel pump for a nitrous kit if you want later. The stock fuel lines are only good to about 375 hp.