Built LQ9 with FLT level 6

[AlaskanC3driver]

So i took an lq9 out of 2003, I bored it .010 and used lq4 speedpro hyperutes,arp rod bolts and main studs,then balanced it up and installed cloyes double chain,asp pulleys,ls7 lifters,west coast cnc ported 317 castings, cam is thunder racing cheaTR v.3 custom, ported stock intake and throttle body, 42 LB injectors,K&N 77 cold air intake, ls1 electric fans, dynatech longtube headers with cats and pipe. I also orderd FLT 4l65e level 6 trans and circle D 2600-2800 converter. The tune comes from Nelson and the first one i got was right on the money, lets hope this one will be also. This is all going into my 2001 C3 pickup. I was wondering with this setup if a walboro 250 is needed or big enough for my application.
Any comments or advice appreciated !
Thanks to all of you who have provided lots of valuable info on this sight

[jetmech]

I would throw a walbro 255 in the tank just so you have room to grow. That way, you'll have plenty of fuel up to about 550+ if you choose to go that high. Besides, installing a walbro is easy.

[DamnYankee]

Runa Walbro 255lph along with a hotwire kit from Racetronix and you'll be fine.

[AlaskanC3driver]

Is there a drop in walboro pump set up for my 2001 gmc ? if so where can i locate one ?
Thanks for the replies

[pl4yboy]

Part number GSS340. You can buy them from TSP. If you get the one from summit it doesn't come with the wiring.