Aussie
Zoom-Zoom
If your going to be a red light racer or you want to drag your car or even just looking for some top end on the highway then go with a turbo setup on your LS motor. If you want to have the nice powerband and like cruising on some back roads and maybe racing someone through the mountains go with a GSR or Type R motor swap. Either way you'll enjoy it it's just what you want more. Something that will be fast in a straight line or something that will always have the power there for the next corner.