I am building up a 1984 c10 swb and I have decided to ditch my 468 build and go the ls turbo route. I have an understanding but little knowledge about turbo sizing or wastegates and such. I'm reading up on everything and looking thru every thread on here to gain some knowledge. Looking to do either a single or twin setup. My fabrication skills are up to snuff so I will be building my own kit using truck manifolds. This is not a dd but more of a weekend warrior with capabilities of putting some miles on her and occasional track use. Below is a break down of the build.

* Engine - 2001 5.3l LM7 with stock bottom end and heads with ls9 head gaskets and ARP head bolts.
* Valve train - 2002+ LS6 cam with blue springs and hardened pushrods(length checked).
* Induction - Edelbrock RPM intake, Msd Ignition with a Blow thru carb( not looking to debate carb vs efi).
* Fuel system - Walbro 255 or Bosch 044(recommendation) with a Aeromotive return style regulator with a boost reference.
* Oiling system - Tap the adapter above the oil filter for supply and tap the oil pan for drain.
* Single turbo - size recommendation
* Wastegate - size recommendation
* BOV - size recommendation
* Twin turbo - size recommendation
* Wastegate - size recommendation
* BOV - size recommendation
Drive train will be a built th350 with a Hughes converter with 3.08 gears and a 28" tire. I know there is more to it but I'm just trying to get the basics down for now. Thanks for the help.