literally years and years ago, a buddy named Matt had an eg with a bone stock LS + injectors and an hks turbo kit that was meant for dseries. He modifed the flange so it would bolt up to the LS motor and he made like 280whp forever! That thing was reliable as fuck and fast! haha. I don't remember how much boost, but you can ask Ed the tuner about it. I bet he still remembers it.