I'm putting down 250whp/200tq right now. This is on a older Garrettt3/t04b with a stage 2 exhaust wheel. Upgrading to a Turbonetics t3/to4e 57trim with a stage 5 exhaust wheel soon so i'm hoping for 350 range. My block is mildy built so it can stand up to some abuse. Right now i'm on open dp sounds like a semi truck its crazy. Thanks for the comments.