A lot of racers all over the world use the Bosch 044. It is the better Walbro. Make a search on Google.
For those who live in Australia

:
? Brand New Bosch 044 Racing External Fuel Pump 0580254044 E85 Race Genuine | eBay
Flow chart
http://i241.photobucket.com/albums/f...flowchart1.jpg
Good thing: you can run the 044 even on a higher fuel pressure level without a significant loss in flow. Probabely no need to change injectors. I would rather fit an external fuel pressure regulator and adapt the pressure to the desired fuel requirement.
Steven
Berlin Germany