Ok... . I know I need a lot of upgrades, including fire ringing and a built transmission, but I want to end up with 500 to 550 horsepower and would like to be able to tow my trailer over the mountains without EGT's getting out of control. Depending on which dealer you talk to, theirs is the best. I would like to hear from people that are not selling the things. What will work best for my situation, including durability and mileage. 
