What size fuel pump do I need for my setup?

Setup: Ls motor, t3to4e .50 trim with .63 exhaust, hondata, 580 cc injectors..

Do I even need to change my fuel pump?

Walbro 255lph HP. Great pump and good price. I think you can find them in the sponsor market for under 100.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by allMotor93Hatch &raquo;</TD></TR><TR><TD CLASS="quote">Walbro 255lph HP. Great pump and good price. I think you can find them in the sponsor market for under 100.</TD></TR></TABLE>

and this is required to have?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j boy &raquo;</TD></TR><TR><TD CLASS="quote">

and this is required to have? </TD></TR></TABLE>

Yes!

Walbro 255 LPH. Probably the most you'll ever need and under $100!

already ordered.. thanks to those who replied.