I've got a lot of old hoses to replace. I just placed my order for parts and am waiting for them to arrive. In the meantime I'm taking inventory of what hoses need replacing. All of my hoses are metric. I'm going to phone my local auto parts store today an see if they carry 8mm fuel line and various other hoses. But I'll have to bring them samples. I don't know these sizes.
I try to be pretty organized, so I labeled all the hoses and took some pics. I'll take them all out, head over to the auto parts store and see if they can get me what I need.