I just have to combine a 1/2 fuel line to two 3/8 fuel lines, like the aeromotive tech suggested. They told me to run a Y where they all connect. I just didnt know that the T fitting would be ok. I am going to run off the pump a AN flairnut to 1/2 fuel line, then I will convert with AN fittings to a 1/2 flex line (braided) to a 1/2 npt (male fitting) into a T. Off the T I will use screw in adaptors to 3/8 line and hardpipe 3/8 line to the fuel rails it should work out good. Should I make either rail (one will be longer by about 6 inches hardpipe) a straight through shot and take the closer rail off the side or should I take the T and use the straight through section for the 3/8 tube and the side for the 1/2"? I wish I could come up with some pics to describe what im trying to do but I cant.