i have a 2005 sierra 1500 5.3 4wd with 114k on the clock and i just picked up a complete running lq4 and harness from a local u pull it junkyard for $200 and its time i swap it into my truck. i am working on the 4l80 swap but as far as the engine heres my plans install new intake gaskets, .650 texas speed springs in the 317 heads, install a ported ls6 oil pump, zr1 cam and cam insall kit and a set of pacesetter longtube headers. i might possibly do head studs and zr1 headgaskets but i want to keep the cost down as i have already purchased the engine valve springs and headers. id like to run a rear mount turbo and i need to know if this is a good amount of mods for the engine and also need to know what size injectors to run with a 60mm garret turbo that i also have that was just rebuilt. any input would be great thanks kevin