According to the Hahn Racecraft website the Kappa Stage III and Stage IV systems are now available. The Stage IV setup uses a Mits 20G turbo and they are touting 380 whp
I have a stage II system on order for my Sky and will have it supersized to at least a Stage III. I may even opt for the stage IV depending on whether or not the stock internals will handle it and what the octane requirements are (only 92 octane availalbe here in the corn state)
