Well, FWIW, with my truck, I'm running stock turbo, VanAaken box and stock injectors. when towing my 33' FW up grades in 5th, I can get to 1200 preturbo fairly quickly. Going to 4th helps, if the grade isn't too steep. If the grade gets really steep, I'm dropping to 3rd. I would think that with bigger squirters, you're going to need to keep your eye on the EGT's. It's all relative anyways. Are you wanting to keep your foot in it when pulling big hills? If so, you'll want a bigger turbo to pull the hot air faster. With the 80hp injectors, the temps shouldn't get too out of control, but you always want to keep an eye on the gauge when pulling big hills. All you'll have to go is gear down, and you should be okay.