The Mercedes part number for V8 injectors is 000-078-58-23, which is the same as Bosch number 0437 502 054. You my friend have V8 injectors. The only thing that I am puzzled about is why couldn't Phil figure it out (computer problem?). You can actually plug in both numbers (Mercedes and Bosch) on the Fast Lane catalog and see that they are identical.
Seals are the same as I mentioned earlier (116-070-00-77). BTW, the Mercedes part number for 6 cylinders is 000-078-56-23 (Fast Lane # C1000-13519).