fuel injection pumps

[MRTANGOMAN]

hi i have a few injection pumps that i could do with knowing about .
could anyone please help with what they are off and the head size please ??

0460494252

0460404042

0460494267

0460404056

i have a friend that has a mk3 golf  AHU engine , that he drag races . has had enough of trying to map the chips in that ecu so he's going M-tdi