Swapping M104 in W114 Coupe. Is dual fuel pump a must in M104 E320?

[hismajestics]

The original setup for W114 (250 CE) uses one fuel pump.





In a W124 E320 the fuel is supplied by two fuel pumps.



Is it absolute necessary to install this setup in my swap or can I use the existing one that is bolted on to the chassis already?

 

[kth286]

The later 104 engines used just one high power pump.

My late 1995 E320 coupe has just the one pump.

 

[hismajestics]

Hi, do you happen to know parts number or something to identify your pump? I would like to compare with mine. Thanks.