^^^ I think you can guess which HPFP Keith will be recommending
I like the aut.....
I have some pretty extensive experience turning wrenches myself from engine and transmission builds to turbo kit installation and fabrication, intercoolers, intakes, exhaust systems, etc. so I understand why you want to save a few quid and enjoy installing your own fuel pump.
HOWEVER,
The FSI HPFP is the one automotive part I would recommend having rebuilt by a properly trained professional with the correct tooling and measurement devices or installing a pre-assembled unit that was constructed in the same manner.
I am not sure if you are aware of the manufacturing processes and testing and q.c. that go into these pumps but if you aren't let me know and I'll spend some time putting the info together.
The short of it is that we have chosen to invest over half a million dollars in the assembly and q.c. processes associated with our HPFP upgrade to insure no assembly errors or run in failures occur as the damage to your engine can be costly.