[Vwdiesel] need help to id a fuel filter housing

[raymond]

on a diesel conversion passat. the wix filter in the car is number 33472. wix tells me that filter is fora 79-85 vw diesel. autohauz does not have a reference, further more within that age range they seem toto offer several different filters so i am stuck. i could just buy the wix filter and be done with it though i would like to knowwhat type of filter housing i have in the car.
i am trying to add several items to an autohauz online order to get the free shipping.
other items i would purchase are: return fuel line which i can find, secondly i would purchase the clear fuel supply lineto keep with me. autohauz does not have that clear line as far as i can see. i could be swayed to purchase an extended battery cable for a trunk mount (second) battery, though they don't offer cables either. 
i could see my way to purchasing a second battery switch to avoid discharging the entire system, mostly for marine use is where i have seen them, any thoughts on this one.
thanks, ray