I'm converting my fuel system back to normal with the exception on the rail supply piece and return piece. Both of these are going to be braided flex. I didn't do the original work where the supply line was bypassed with a 1/2" or greater and he used the original supply line for the return. Now my question is are the original supply and return lines both 3/8"? What are thread size I'll for the braided to the transition points by the oil pan? I've been looking through Vortex, Kirban, and Highway Stars but no one mentions line and connector size. I would like to try to obtain the pieces before I disable the car and get it done in one session. This whole process started by wanting to abandon the external sump and go back to an in-tank. This was all done by the previous owner so I may be in for a surprise at some point down the line. thanks.