y do you need a high flow pump? unless your turboing or something. Without forced induction(including nitros) I think the fuel pump and injectors should be sufficient to do whatever you need and just get a ECU like E-manage to adjust the amount of fuel your getting into your engine to compensate for say a CAI
Also if you get a kit I think some kits come with fuel pump and injectors so if you just get a turbo kit it'll have everything you need to go turbo.
if you still need one http://monkeywrenchracing.com/mwr_255_lp...ix_corolla.html
here is one for 00 celica's that flows plenty of fuel for more than any 7th gen celica has gotten to.