Knowing Livernois there is probably a reason their upgraded HPFP is 1500.00, and XDIs is less than half the cost, I am just curious what all of you think? I am planning on going e85 with my SHO and everything I have read is you need 25% more than stock to do so, and the xdi is 35%. Also I am assuming you should upgrade the injectors as well, does anyone have any suggestions?