I have a stock 99 2500 Quad cab 4X4 And will be moving from Pa. to Alaska this spring. I will be towing a 10,000 lb trailer. Does anyone have a thought of how I can boost HP and mileage, the hills in BC. and the Yukon are long and steep. I drove it last year in a gas dump truck and trailer and was at a crawl by the time I got to the top. Thanks!