Well I travel quite a bit, to the mountains in higher elevations this is why I want fuel injection, I don't want to have the gutless feeling when the air gets thin. I live at 60' above sea level but travel to 2000 ft and want power both places. I'm not wanting to put a used motor in my truck it will need to be rebuilt before I drop it in and I'm not much on having people work on my truck, and I can't be without this truck more then a weekend. I am considering the LS line up. Ram jet has worked it's way to the top of the list.