technically all you need to run it is compatable rubber fuel lines, i am beleaving more and more the nic motor problems were blown out of proportion due to the test procedure using the modic, i think if the motor hasn't shown the leak down problem by now it's not going to happen, my thoughts on what really happened are, there was a bad batch of blocks which set up the mind set that if it runs bad it is bad, bmw came up with up with the quicky procedure that looks at individual cylinder combustion quality to gauge leak down and if a couple holes are down the computer tells the tech to tear down and inspect, the shop manager is unlikely to tie up a bay and mechanic for a couple days on something that the customer is not going to want to hear if the motor is good (uhhhh we pulled the heads on your motor and found out that it was fine, that will be $3500) espcially if he can just warranty the short block and get paid by bmw for a gravy job. i think the problems that came after the bad blocks ran out were a combonation of bad cats, blown pcv plate and intake leaks, i had one " bad nic motor" car come in that just needed a fuel pump, it was not supplying enough pressure and pissed off the computer which over compensated and made the engine run bad like the "nic problem" reset the computer and it would idle fine