Go turbo (like a Drag kit, or Fmax or Revhard) those are nice kits! The Vortec SC's peak numbers are nice, but who really cares if u make 270 hp at 8000k rpm, its alot more usable if you have 250hp from 4500k - redline. instead of having shitty power untill redline.......look for some dyno plots and you'll see what im talking about.