I'm in the middle of installing a JDM VG30DET in my C31 Laurel. It was carburated and has 2 6mm fuel lines from tank to engine. I'm going to replaced them with 8mm steel lines but I'm still in doubt about the connections on the tank it self. It has the 2 6mm lines on the front/side of the tank which are welded/soldered on. I could modify the sending unit and put my Walbro pump in there but space it tight there. I also have an external Bosch pump that I could use.
What have you guys done with similar fuel tanks?