I want to turbo my 99 5.3l silverado, I'm building a kit kind of like the sts kit, my goal is 425hp at the wheels, running 8-10#'s of boost.

But I'm still a little lost when it comes to picking the correct turbo and ar's this truck is my daily driver but it will see the track every now and then.

Here are some of the turbo's I've been looking at, what do you guys think
here is the Garrett but the one I was thinking about buying was a .81 ar for the turbine

eBay Motors: Brand New REAL! GARRETT GT4088 T4 Turbo (item 170164925815 end time Nov-08-07 09:12:01 PST)

eBay Motors: TURBONETICS 62-1 T4 Turbo 600HP Mustang Supra Chevy (item 170166832803 end time Nov-13-07 18:41:32 PST)

Also I still don't know what tuner I should use either Ls1edit or Hptuners

and where can I find bigger injectors, whats the biggest I can go without changing fuel rails or anything, will my walbro 255 fuel pump handle running 10#'s of boost