Soush

Ive got a 2014 sierra single cab, running the L83 with stock internals and just a DOD Delete + a stage 2 gwatney cam. Whipple 2.9, L86 throttle body, 100% methanol injection... The car runs like a dream and has hit 595whp on the dyno. I'm looking to do an upgrade on the fueling, adding a 102mm TB and lowering the pulley to a 3.5" as I'm currently running a 4". Issue at hand is there are alot of people claiming different numbers and I do not have any definite number as to what the max HP is that the L83 with stock internals can take. I've heard from 500whp to 750whp. Just wanted to know your input to see if anyone has any idea. Much appreciated!!