unless you have changed to 12mm fuel feed lines dont bother even thinking about an 044 it wont work as soon as you open your throttle
bosch 070 is a external vl/bmw pump, cheap as chips and work forever, plus warranty is great
i ran a 070 on a standard ae71/ke70 tank and never had fuel surges just be sure not to really thrash your car when your gotting down below a quarter