Use this package of fittings to go from the Mk4 stock feed and return lines to the rain tray where it changes to -6AN. Then send them across the tray to the other side where they can terminate in a surge tank.
2x lengths stock-type fuel line that attach to stock barbs (to mat to supplied barbs)
2x barb to -AN fittings to mate stock fuel line
4x pieces shrink wrap for snug fit and OEM appearance
4x Oetiker clamps for OEM reliability and appearance
1x braided plastic sheath to cover both rubber lines