87 sdl fuel leak (i think)

[rsieracki]

So under the rear drivers side near tire i see a puddle this morning and it smelled like diesel so im thinking fuel line but i will put on jack and investigate tonight, off hand does anyone know what size fuel line i need to order/buy so i can source it and pick it up on the way home before i tear it apart only to have the parts store closed? Im thinking i can replace with rubber spliced over the metal line with hose clamps as opposed to buying and getting new metal lines. any ideas or experience anyone can share? perhaps a link to an old thread as i couldnt find any that answered my question.

Thanks
Ron