99 obs tahoe lq4 fuel pump need help fast

I have a obs 99 tahoe and am finishing up my lq4 swap and my fuel pump is dead. I'd like to swap in walbro 255 but I'm not sure what all I need. I've read something about a corvette fuel filter but if someone could help me out it'd be much appreciated. I need to order this stuff today so I can get it in this weekend

What year is your LQ4 from?

What all did u have to do to run everything i have a 97 gmc and iam getting rdy to to a 5.3 out of a 06 and nerd help and what all i need to do to make it work in my truck thanks mark