Re: 250CE fuel pump
The 250CE (actually a W114 not 115 being a 6 cyl.) was also sold in Australia. It ran Bosch D-Jetronic like the early 280E (&CE) (W114), 280SE (&SEL) 3.5 (W108), 300SEL 3.5 (W109), early 280SE(&SEL), 350SE(&SEL) and 450SE(&SEL) (W116) and early 350SL (&SLC) and 450SL (&SLC) (W107). The fuel pump from any of these models would be suitable for the 250CE. Last time I checked the price here they were about $250 AUD.
107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.