Thanks for all the advice and helps, I looked at Fastlane part catalogue but still having no idea what parts I need to completely replace all the lines coming into/from the spin on filter.

I found 4 fuel lines ( one is not available at this time ), 2 line sealers, one with picture, one without. I emailed Phil but haven't received his respond yet. Can anyone point me to what I need?

Also, I plan to put a clear inline filter on the fuel line coming from the fuel tank to the spin on filter because I plan to switch to B100 soon. Is there a pre filter for the fuel on this particular model? or the spin on filter is all there is. Can someone also show me which lines in this picture are the incoming fuel line and the return line?

I have been working on Japanese gasoline cars all my life but this German diesel one is a totally new experience to me.