[Heavymetl]

Nice build!

The stock 4L60E is not gonna last. They're just not up to the task when it comes to the brutal torque of a turbo.

As for the fuel system, how big is the pump and what type of fuel? That'll likely be your limiting factor. If its a typical walbro 255, I'd say 475ish to the tire on gasoline is about it. Watch those fuel pressures and duty cycles closely.