I have a 04.5. Current mods are in my sig. I do plan on stacking another fueling box in there and doing a set of injectors here real soon. I have the factory filter mounted pump as of now, which is in need of replacing as its pushing out very low PSI. I have heard about doing the 05 style in tank pump, but wasn't sure how good that really was. Also have heard alot about the Fass 150 and the Fass 95. Dont know much about either though. Maybe there is another option out there for me also? Any info on this would be great. I need to get this done ASAP, but need to figure out what to order up.