Jkan2001

I'm doing an apex turbo kit on my 00 ex civic and i have the walbro 255 lph inline fuel pump to do. I cut the original fuel line between the fuel filter/fuel rail. I figured the big original fuel line was a 3/8" size so i bought lots of that hose. The pump has 1 big nipple that fits the origina 3/8" size...BUT the other side of the pump has a smaller nipple which i figured uses a 5/16" size? I need to lengthen the hoses so i can mount the pump on the firewall but to do that i would need a brass straight pipe with barbs to go from the stock 3/8" to lenghten a hose and then onto the pump. Then i would need another connector to go from the small 5/16" back to the 3/8" to connect onto the pipe before the fuel rail. Does anyone have any ideas on where to find that piece? I went to lowes, pep boys, and orileys and no one has it or knows where i can find it. Also i have a mechanical fuel pressure gauge with a threaded nut that screws in...how would i tap that in? If any of you could IM me at jkan2001 that would help a lot...thanks.