Can you tell me if the IP and injector return lines that meet at the banjo bolt on top of the fuel filter of a 1984 300d mix fuel with the supply side in the filter?

Thanks, Chuck

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1983 300td 240k (down with bad tranny)
1984 300d 222k (daily driver) "Olive"
1997 GMC K2500 105k (sled dog limo)

"The scenery in ANWR is as spectacular as the Grand Canyon and the wildlife is more impressive."