s400 series turbos.

I have a 02 24v auto trans, current 7x.11 injectors edge comp hot unlock picking up a stainless diesel manifold tomorrow night and a t4 adapter.and someday p pump swap as well. truck is mostly a dd pull trailer prolly 10 times a year wanting someday to get 600 to 700 horse out of it maybe do some sled pulling when i get to that point just for fun. my question is, what turbo would be a good mate for my setup and hp goals as for turbo and injector. i was thinking a s465 and some 6 hole injector.. i wanna stick with the 400 series turbos for the reliability anyone running this setup or have any input thanks!