Fuel Return Line K20 at brianrlukens blog

Fuel Return Line K20. Some high hp dragsters use them. from the stock fuel filter, you will need a banjo bolt+fitting to go in the fuel line that will take you to the fuel pressure.

K20A2, Replacing the stock oil cooler return fitting Honda / Acura
from www.k20a.org

The real returnless system relies on the ecu to control the pressure. Earl's performance check valve (ear. 1.) the stock fuel system with something like rdx injectors ought to be fine for you.

K20A2, Replacing the stock oil cooler return fitting Honda / Acura

Fuel Return Line K20 if you are concerned about heating the fuel,you can plumb a cooler into the return line. Earl's performance check valve (ear. Complete kit for k20/k24 engine swap; Some high hp dragsters use them.