The return line is the one that uses the cheap hose clamps to hold it on. Thats the one you want to use. I would recommend going to an auto parts store and getting new high pressure fuel injection hose. Also, i would recomend also getting the proper hose clamps for fuel injection hoses. It has rounded edges and doesn't use a worm type clamp that will cut into the hose. Also, to mount the FMU, i mounted it where the relays were to the far right on the firewall.

if you got any other questions about the setup on a 95. I can help you out. I installed the stage II kit myself on mine back in august so it is still fresh in my head.

jason
95 GS turbo