4g63's don't make shit for horsepower NA. I wrote the book on how to convert a DSM to turbo, most of the same should apply here.

http://www.dsmtuners.com/forums/arti...o-nt-4g63.html

If you want to go the cheaper but less reliable version of just putting a turbo onto the na 4g63, this will help you.

http://www.dsmtuners.com/forums/arti...turbo-kit.html